Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
The electronic medicines compendium (emc) no longer publishes a Summary of Product Characteristics for this product, which usually means it is no longer marketed in the UK. The patient leaflet below is kept for reference, but the product may not be available.
If you were prescribed this medicine, other products containing Buprenorphine may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.
for This medicine has been prescribed for you for relieving moderate, long-lasting pain that requires the use of a strong painkiller. It contains buprenorphine which belongs to a class of medicines called opioids, which are 'pain relievers'. This medicine has been prescribed to you and should not be given to anyone else. Opioids can cause addiction and you may get withdrawal symptoms if you stop using it suddenly. Your prescriber should have explained how long you will be using it for, and when it is appropriate to stop, how to do this safely. Sevodyne should not be used to relieve acute pain. Sevodyne patches act through the skin. After application, buprenorphine passes through the skin into the blood. Each patch lasts for seven days.
e Sevodyne Do not use Sevodyne: if you are allergic to buprenorphine or any of the other ingredients of this medicine (listed in section 6); if you have breathing problems; if you are addicted to drugs; if you are taking a type of medicine known as a monoamine oxidase inhibitor (examples include tranylcypromide, phenelzine, isocarboxazid, moclobemide and linezolid), or you have taken this type of medicine in the last two weeks; if you suffer from myasthenia gravis (a condition in which the muscles become weak); if you have previously suffered from withdrawal symptoms such as agitation, anxiety, shaking or sweating upon stopping taking alcohol; for acute post-operative pain because of the increased risk of dependency and developing serious breathing problems. If you are going to have an operation, or have just had an operation, please tell the doctor at the hospital if you are taking Sevodyne. Your doctor may adjust your dose. Sevodyne must not be used to treat symptoms associated with drug withdrawal. Warnings and precautions Talk to your prescriber before using this medicine if you: suffer from seizures, fits or convulsions; suffer from a breathing related sleep disorder (sleep apnoea); have a severe headache or feel sick due to a head injury or increased pressure in your skull (for instance due to brain disease). This is because the patches may make symptoms worse or hide the extent of a head injury; are feeling light-headed or faint; have severe liver problems; have a high temperature, as this may lead to larger quantities of the active ingredient being absorbed into the blood than normal; are treated with antidepressants. The use of these medicines together with Sevodyne can lead to serotonin syndrome, a potentially life-threatening condition (see 'Other medicines and Sevodyne'); are or have ever been addicted to opioids, alcohol, prescription medicines, or illegal drugs; have previously suffered from withdrawal symptoms such as agitation, anxiety, shaking or sweating, when you have stopped taking alcohol or drugs; feel you need to use more of Sevodyne to get the same level of pain relief, this may mean you are becoming tolerant to the effects of this medicine or are becoming addicted to it. Speak to your prescriber who will discuss your treatment and may change your dose or switch you to an alternative pain reliever; are a smoker; have ever had problems with your mood (depression, anxiety or a personality disorder) or have been treated by a psychiatrist for other mental illnesses; suffer from constipation. Tolerance, dependence, and addiction This medicine contains buprenorphine which is an opioid medicine. Repeated use of opioids can result in the drug being less effective (you become accustomed to it, known as tolerance). Repeated use of Sevodyne can also lead to dependence, abuse, and addiction, which may result in life-threatening overdose. The risk of these side effects can increase with a higher dose and longer duration of use. Dependence or addiction can make you feel that you are no longer in control of how much medicine you need to take or how often you need to take it. The risk of becoming dependent or addicted varies from person to person. You may have a greater risk of becoming dependent on or addicted to Sevodyne if: You or anyone in your family have ever abused or been dependent on alcohol, prescription medicines or illegal drugs ('addiction'). You are a smoker. You have ever had problems with your mood (depression, anxiety, or a personality disorder) or have been treated by a psychiatrist for other mental illnesses. If you notice any of the following signs whilst taking Sevodyne, it could be a sign that you have become dependent or addicted: You need to take the medicine for longer than advised by your doctor. You need to take more than the recommended dose. You might feel that you need to carry on taking your medicine, even when it doesn't help to relieve your pain. You are using the medicine for reasons other than prescribed, for instance, 'to stay calm' or 'help you sleep'. You have made repeated, unsuccessful attempts to quit or control the use of the medicine. When you stop taking the medicine you feel unwell, and you feel better once taking the medicine again ('withdrawal effects'). If you notice any of these signs, speak to your doctor to discuss the best treatment pathway for you, including when it is appropriate to stop and how to stop safely (see section 3, If you stop taking Sevodyne).
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Sleep-related breathing disorders Sevodyne can cause sleep-related breathing disorders such as sleep apnoea (breathing pauses during sleep) and sleep related hypoxemia (low oxygen level in the blood). The symptoms can include breathing pauses during sleep, night awakening due to shortness of breath, difficulty in maintaining sleep or excessive drowsiness during the day. If you or another person observe these symptoms, contact your doctor. A dose reduction may be considered by your doctor. This medicine may cause application site reactions which are usually presented by a mild or moderate skin inflammation, and their typical appearance may include redness, swelling, itching, rash, small blisters, and painful/ burning sensation at the application site. Most commonly the cause is skin irritation, and these reactions stop after Sevodyne patches are removed. More serious allergic reactions may occur such as blisters with discharge, which may spread outside the application site and may not resolve rapidly after Sevodyne removal. Chronic allergic reactions may lead to open wounds, bleeding, ulcers, skin discolouration and infections. If you notice any of the above skin reactions, please contact your doctor. This medicine may increase your sensitivity to pain particularly at high doses. Tell your doctor if this happens. A reduction in your dose or a change in your medicine may be necessary. If you have recently had an operation, please speak to your doctor before using these patches. Athletes should be aware that this medicine may cause a positive reaction to sports doping control tests. Similar to other opioids, this medicine may affect the normal production of hormones in the body, such as cortisol or sex hormones, particularly if you have taken high doses for a long period of time. Children and adolescents Do not give this medicine to children and adolescents below 18 years. Other medicines and Sevodyne Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. Some medicines may increase the side effects of Sevodyne and may sometimes cause very serious reactions. Do not take any other medicines whilst using Sevodyne without first talking to your doctor, especially: Anti-depressants such as moclobemide, tranylcypromine, citalopram, escitalopram, fluoxetine, fluvoxamine, paroxetine, sertraline, duloxetine, venlafaxine, amitriptyline, doxepine, or trimipramine. These medicines may interact with Sevodyne and you may experience symptoms such as involuntary, rhythmic contractions of muscles, including the muscles that control movement of the eye, agitation, hallucinations, coma, excessive sweating, tremor, exaggeration of reflexes, increased muscle tension, body temperature above 38°C. Contact your doctor when experiencing such symptoms. Sevodyne must not be used together with a type of medicine known as a monoamine oxidase inhibitor (examples include tranylcypromide, phenelzine, isocarboxazid, moclobemide and linezolid), or if you have taken this type of medicine in the last two weeks. If you take some medicines such as phenobarbital or phenytoin (medicines commonly used to treat seizures, fits or convulsions), carbamazepine (a medicine to treat seizures, fits or convulsions and certain pain conditions), or rifampicin (a medicine to treat tuberculosis) the effects of Sevodyne may be reduced. Sevodyne may make some people feel drowsy, sick or faint or make them breathe more slowly or weakly. These side effects may be made worse if other medicines that produce the same effects are taken at the same time. These include certain medicines to treat pain, depression, anxiety, psychiatric or mental disorders, medicines to help you sleep, medicines to treat high blood pressure such as clonidine, other opioids (which may be found in painkillers or certain cough mixtures e.g. morphine, dextropropoxyphene, codeine, dextromethorphan, noscapine), antihistamines which make you drowsy, or anaesthetics such as halothane. Concomitant use of Sevodyne and sedative medicines such as benzodiazepines (medicines used to treat anxiety or to help you sleep) or related drugs increases the risk of drowsiness, difficulties in breathing (respiratory depression), coma and may be life-threatening. Because of this, concomitant use should only be considered when other treatment options are not possible. However if your doctor does prescribe Sevodyne together with sedative medicines the dose and duration of concomitant treatment should be limited by your doctor. Please tell your doctor about all sedative medicines you are taking, and follow your doctor's dose recommendation closely. It could be helpful to inform friends or relatives to be aware of the signs and symptoms stated above. Contact your doctor when experiencing such symptoms. Gabapentin or pregabalin to treat epilepsy or pain due to nerve problems (neuropathic pain). Medicines to treat depression. Medicines used to treat allergies, travel sickness or nausea (antihistamines or antiemetics). Medicines to treat psychiatric disorders (antipsychotics or neuroleptics). Muscle relaxants. Medicines to treat Parkinson's disease. Sevodyne with alcohol Alcohol may make some of the side effects worse and you may feel unwell if you drink alcohol whilst wearing Sevodyne. Drinking alcohol whilst using Sevodyne may also affect your reaction time. Pregnancy, breast-feeding and fertility Do not use Sevodyne if you are pregnant or breast-feeding, think you might be pregnant or are planning to have a baby, unless you have discussed this with your prescriber and the benefits of treatment are considered to outweigh the potential harm to the baby. If you use Sevodyne during pregnancy, your baby may become dependent and experience withdrawal symptoms after the birth which may need to be treated. Do not use Sevodyne while you are breast-feeding as buprenorphine passes into breast milk and will affect your baby. Ask your doctor or pharmacist for advice before using this medicine. Driving and using machines Sevodyne may affect your reactions to such an extent that you may not react adequately or quickly enough in the event of unexpected or sudden occurrences. This applies particularly: at the beginning of treatment; if you are taking medicines to treat anxiety or help you sleep; if your dose is increased. If you are affected (e.g. feel dizzy, drowsy or have blurred vision), you should not drive or operate machinery whilst using Sevodyne, or for 24 hours after removing the patch. This medicine can affect your ability to drive as it may make you sleepy or dizzy. Do not drive while taking this medicine until you know how it affects you. It is an offence to drive if this medicine affects your ability to drive. However you would not be committing an offence if: The medicine has been prescribed to treat a medical or dental problem; and You have taken it according to the instructions given by the prescriber or in the information provided with the medicine. It was not affecting your ability to drive safely. Talk to your doctor or pharmacist if you are not sure whether it is safe for you to drive while taking this medicine.
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Sevodyne Always use this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure. Before starting treatment and regularly during treatment, your doctor will discuss with you what you may expect from using Sevodyne, when and how long you need to take it, when to contact your doctor, and when you need to stop it (see also, If you stop using Sevodyne). Different strengths of Sevodyne are available. Your doctor will decide which strength of Sevodyne will suit you best. When people first start using Sevodyne, they often experience some nausea and vomiting (see section 4). This usually passes after the first week of treatment. It's a good idea to book a follow-up appointment with your doctor a week or two after you first start using Sevodyne patches to ensure that you are taking the correct dose and to manage any side effects. During treatment, your doctor may change the patch you use to a smaller or larger one if necessary or tell you to use a combination of up to two patches. Do not cut or divide the patch or use a higher dose than recommended. You should not apply more than two patches at the same time up to a maximum total dose of 40 micrograms/hour. If you feel that the effect of the Sevodyne is too weak or too strong, talk to your doctor or pharmacist. Adults and elderly patients Unless your doctor has told you differently, attach one Sevodyne patch (as described in detail below) and change it every seventh day, preferably at the same time of day. Your doctor may wish to adjust the dose after 3-7 days until the correct level of pain control has been found. If your doctor has advised you to take other painkillers in addition to the patch, strictly follow the doctor's instructions, otherwise you will not fully benefit from treatment with Sevodyne. The patch should be worn for 3 full days before increasing the dose, this is when the maximum effect of a given dose is established. Patients with kidney disease/dialysis patients In patients with kidney disease, no change in dose is necessary. Patients with liver disease In patients with liver disease, the effects and period of action of Sevodyne may be affected and your doctor will therefore check on you more closely. Patients under 18 years of age Sevodyne should not be used in patients below the age of 18 years.
Method of administration Sevodyne transdermal patch is for transdermal use. Sevodyne acts through the skin. After application, buprenorphine passes through the skin into the blood. Before applying the transdermal patch Choose an area of non-irritated, intact skin on your upper arm, outer arm, upper chest, upper back or side of the chest. (See accompanying illustrations). Ask for assistance if you cannot apply the patch yourself.
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Upper arm
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Back
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Front
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Sevodyne patch should be applied to a relatively hairless or nearly hairless skin site. If no suitable hair free sites
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2:
covered with a transparent protective foil. Carefully peel off one part of the foil. Try not to touch the sticky part of the transdermal patch.
tep 3:
tep 4:
Wearing the transdermal patch You should wear the patch for seven days. Provided that you have applied the patch correctly, there is little risk of it coming off. If the edges of the patch begin to peel off, they may be taped down with a suitable skin tape. You may shower, bathe or swim whilst wearing it. Do not expose the patch to extreme heat (e.g. heating pads, electric blanket, heat lamps, sauna, hot tubs, heated water beds, hot water bottle, etc) as this may lead to larger quantities of the active ingredient being absorbed into the blood than normal. External heat may also prevent the patch from sticking properly. If you have a high temperature this may alter the effects of Sevodyne (see 'Warnings and precautions' section above). In the unlikely event that your patch falls off before it needs changing, do not use the same patch again. Stick a new one on straight away (see 'Changing the transdermal patch' below). Changing the transdermal patch Take the old transdermal patch off. Fold it in half with the sticky side inwards. Open and take out a new patch. Use the empty sachet to dispose of the old patch. Discard the sachet safely. Even used patches contain some active ingredient that may harm children or animals, so make sure your used patches are always kept out of their sight and reach. Stick a new transdermal patch on a different appropriate skin site (as described above). You should not apply a new patch to the same site for 3-4 weeks. Remember to change your patch at the same time of day. It is important that you make a note of the time of day. Duration of treatment Your prescriber should have discussed with you how long the course of treatment will last. They will arrange a plan for stopping treatment. This will outline how to gradually reduce the dose and stop using the medicine. Do not stop treatment without consulting a doctor, because your pain may return and you may feel unwell (see also 'If you stop using Sevodyne' below). If you feel that the effect of the Sevodyne is too weak or too strong, talk to your doctor or pharmacist. If you use more Sevodyne than you should As soon as you discover that you have used more patches than you should, remove all patches and call your doctor or hospital straight away. People who have taken an overdose may feel very sleepy and sick. They may also have breathing difficulties or lose consciousness and may need emergency treatment in hospital. When seeking medical attention make sure that you take this leaflet and any remaining patches with you to show to the doctor. If you forget to apply Sevodyne Stick a new patch on as soon as you remember. Also make a note of the date, as your usual day of changing may now be different. If you are very late changing your patch, your pain may return. In this case, please contact your doctor. Do not apply additional patches to make up for the forgotten application. If you stop using Sevodyne Do not suddenly stop using this medicine. If you want to stop using this medicine, discuss this with your prescriber first. They will tell you how to do this, usually by reducing the dose gradually so that any unpleasant withdrawal effects are kept to a minimum. Withdrawal symptoms such as restlessness, difficulty sleeping, irritability, agitation, anxiety, feeling your heartbeat (palpitations), increased blood pressure, feeling or being sick, diarrhoea, shaking, shivering or sweating may occur if you suddenly stop using this medicine. The pain relieving effect of Sevodyne is maintained for some time after removal of the patch. You should not start another opioid analgesic (strong painkiller) within 24 hours after removal of the patch.
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If you have any further questions on the use of this medicine, ask your doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them. Serious side effects that may be associated with Sevodyne are similar to those seen with other strong painkillers and include difficulty in breathing and low blood pressure. This medicine can cause allergic reactions, although serious allergic reactions are rare. Remove the patch and tell your doctor immediately if you get any sudden wheeziness, difficulties in breathing, swelling of the eyelids, face or lips, rash or itching especially those covering your whole body. As with all strong painkillers there is a risk that you may become addicted or reliant on Sevodyne. In patients treated with buprenorphine, the following other side effects have been reported: Very common (may affect more than 1 in 10 people): Headache, dizziness, drowsiness. Constipation, feeling or actually being sick. Itchy skin. Rash, redness, itching, inflammation or swelling of the skin at the application site. Common (may affect up to 1 in 10 people): Loss of appetite. Confusion, depression, anxiety, difficulty in sleeping, nervousness, shaking (tremors). Shortness of breath. Abdominal pain or discomfort, diarrhoea, indigestion, dry mouth. Sweating, rash, skin eruptions. Tiredness, a feeling of unusual weakness, muscle weakness, swelling of hands, ankles or feet. Joint pain. Uncommon (may affect up to 1 in 100 people): Restlessness, agitation, a feeling of extreme happiness, hallucinations, nightmares, decreased sexual drive, aggression. Changes in taste, difficulty in speaking, reduced sensitivity to pain or touch, tingling or numbness. Loss of memory, migraine, fainting, problems with concentration or co-ordination. Dry eyes, blurred vision. A ringing or buzzing sound in the ears, a feeling of dizziness or spinning. High or low blood pressure, chest pain, fast or irregular heartbeat. Cough, hiccups, wheezing. Wind.
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If you need to have blood tests remind your doctor that you are using Sevodyne. This is important because Sevodyne may change the way your liver works and this could affect the results of some blood tests. Rare (may affect up to 1 in 1,000 people): Angina (chest pain associated with heart disease). Mental disorder. Difficulties with balance. Swelling of the eyelids or face, a reduction in size of the pupils in the eye. Difficulty in breathing, worsening of asthma, over breathing. A feeling of faintness, especially on standing up. Difficulty in swallowing. Local allergic reaction with marked signs of swelling (in such cases treatment should be stopped). Swelling and irritation inside the nose. Decreased erection, sexual dysfunction. A flu-like illness. Flushing of the skin. Dehydration. Very rare (may affect up to 1 in 10,000 people): Muscle twitching. Mood swings. Ear pain. Blisters. Not known (frequency cannot be estimated from the available data): Problems with breathing during sleep (sleep apnoea syndrome), see section 2 'Warnings and precautions'. Seizures, fits or convulsions. Inflammation of the bowel wall. Symptoms may include fever, vomiting and stomach pain or discomfort. An increased sensitivity to pain. Colicky abdominal pain or discomfort. Feeling detached from oneself. Withdrawal symptoms in babies born to mothers who have been given Sevodyne in pregnancy may include high-pitched crying, irritability and restlessness, shaking (tremor), feeding difficulties, sweating and not putting on weight. Dependence and addiction (see section 'How do I know if I am addicted?'). A need to take increasingly higher doses of this medicine to obtain the same level of pain relief (tolerance). Contact dermatitis (skin rash with inflammation which may include burning sensation), skin discolouration. Drug Withdrawal When you stop using Sevodyne, you may experience drug withdrawal symptoms, which include restlessness, difficulty sleeping, irritability, agitation, anxiety, feeling your heartbeat (palpitations), increased blood pressure, feeling or being sick, diarrhoea, shaking, shivering or sweating. How do I know if I am addicted? If you notice any of the following signs whilst using Sevodyne, it could be a sign that you have become addicted. You need to use the medicine for longer than advised by your prescriber. You feel you need to use more than the recommended dose. You are using the medicine for reasons other than prescribed. When you stop using the medicine you feel unwell, and you feel better once using the medicine again. If you notice any of these signs, it is important you talk to your prescriber. Reporting of side effects If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme (website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store). By reporting side effects, you can help provide more information on the safety of this medicine.
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Sevodyne
What Sevodyne patches contain The active substance is buprenorphine. 5 microgram/h: Each transdermal patch contains 5mg of buprenorphine in a patch size of 6.25cm2 and releases 5 micrograms of buprenorphine per hour (over a period of 7 days). 10 microgram/h: Each transdermal patch contains 10mg of buprenorphine in a patch size of 12.5cm2 and releases 10 micrograms of buprenorphine per hour (over a period of 7 days). 15 microgram/h: Each transdermal patch contains 15mg of buprenorphine in a patch size of 18.75 cm2 and releases 15 micrograms of buprenorphine per hour (over a period of 7 days). 20 microgram/h: Each transdermal patch contains 20mg of buprenorphine in a patch size of 25cm2 and releases 20 micrograms of buprenorphine per hour (over a period of 7 days). The other ingredients are: Adhesive matrix (containing buprenorphine): povidone K90, levulinic acid, oleyl oleate, poly[acrylic acid-cobutylacrylate-co-(2-ethylhexyl)acrylate-co-vinylacetate] (5:15:75:5), Adhesive matrix (without buprenorphine): poly[(2-ethylhexyl)acrylate-co-glycidylmethacrylate-co(2-hydroxyethyl)acrylate-co-vinylacetate] (68:0,15:5:27), Separating foil between adhesive matrices with and without buprenorphine: Polyethylene terephthalate film; Backing foil: Polyester; Release liner: Polyethylene terephthalate film, siliconised; Blue printing ink. What Sevodyne looks like and contents of the pack Transdermal patch Four sizes are available. 5 microgram/h: Each transdermal patch is beige coloured with rounded corners and is imprinted with 'Buprenorphin' and '5μg/h' 10 microgram/h: Each transdermal patch is beige coloured with rounded corners and is imprinted with 'Buprenorphin' and '10μg/h' 15 microgram/h: Each transdermal patch is beige coloured with rounded corners and is imprinted with 'Buprenorphin" and '15μg/h' 20 microgram/h: Each transdermal patch is beige coloured with rounded corners and is imprinted with 'Buprenorphin' and '20μg/h' One transdermal patch is sealed in one child-resistant sachet. The patches are available in cartons containing 1, 2, 3, 4, 5, 8, 10 or 12 transdermal patches. Not all pack sizes may be marketed.
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Marketing Authorisation Holder Aspire Pharma Ltd, Unit 4, Rotherbrook Court Bedford Road, Petersfield, Hampshire, GU32 3QG, United Kingdom Manufacturer Labtec GmbH, Heykenaukamp 10, 21147 Hamburg, Germany This leaflet was last revised in January 2025 1010311-P14.2
16181-90047-11
Artwork for: Product name: Size: PL/PA no: Type: Artwork dimensions: Reason for request: Version no: Date of revision: Colours: Font(s): Artwork software:
Aspire Pharma Limited Sevodyne (Buprenorphine) PL35533/0059-61, 0135 Leaflet 480mm x 280mm Safety update to section 2 14.2 4.2.25 Black 9pt Strada Condensed InDesign CC
For submission only
Black
Sevodyne 20 microgram/hour transdermal patch comes as patch containing 20mcg. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.
The active substance in Sevodyne 20 microgram/hour transdermal patch is buprenorphine.
Medicines with the same active substance, strength and form include: BuTrans 20 microgram/hour transdermal patch, Bunov 20 microgram/h transdermal patch, Butec 20 microgram/hour transdermal patch. In total there are 5 equivalent products. They are interchangeable only if your prescriber or pharmacist says so.
This leaflet reproduces the patient information leaflet approved for Sevodyne 20 microgram/hour transdermal patch, as published on the electronic medicines compendium (emc). The version printed inside your medicine’s packaging is the one that applies to you.
Whether a medicine is available over the counter or on prescription only depends on its licence. Check the leaflet, or ask your pharmacist — they can tell you straight away.
The text above reproduces the patient information leaflet approved for this medicine, restructured for easier reading.
Treatment of non-malignant pain of moderate intensity when an opioid is necessary for obtaining adequate analgesia.
Sevodyne is not suitable for the treatment of acute pain.
Sevodyne is indicated in adults.
Prior to starting treatment with opioids, a discussion should be held with patients to put in place a strategy for ending treatment with buprenorphine in order to minimise the risk of addiction and drug withdrawal syndrome (see section 4.4).
Posology
Sevodyne should be administered every 7th day.
Patients aged 18 years and over:
The lowest Sevodyne dose (Sevodyne 5 microgram/hour transdermal patch) should be used as the initial dose. Consideration should be given to the previous opioid history of the patient (see section 4.5) as well as to the current general condition and medical status of the patient.
Titration
During initiation of treatment with Sevodyne, short-acting supplemental analgesics may be required (see section 4.5) as needed until analgesic efficacy with Sevodyne is attained.
During the titration process, the dose may be adjusted every 3-days (72 hours). Thereafter, the 7-day dosing interval should be maintained. Subsequent dosage increases may then be titrated based on the need for supplemental pain relief and the patient's analgesic response to the patch.
To increase the dose, a larger patch should replace the patch that is currently being worn, or a combination of patches should be applied in different places to achieve the desired dose. It is recommended that no more than two patches are applied at the same time, up to a maximum total dose of 40 microgram/hour buprenorphine. A new patch should not be applied to the same skin site for the subsequent 3-4 weeks (see section 5.2). Patients should be carefully and regularly monitored to assess the optimum dose and duration of treatment.
In the absence of adequate pain control, the possibility of hyperalgesia, tolerance and progression of underlying disease should be considered (see section 4.4). A Sevodyne dose reduction or discontinuation of Sevodyne treatment or treatment review may be indicated.
Duration of administration
Sevodyne should under no circumstances be administered for longer than absolutely necessary. If long-term pain treatment with Sevodyne is necessary in view of the nature and severity of the illness, then careful and regular monitoring should be carried out (if necessary with breaks in treatment) to establish whether and to what extent further treatment is necessary.
Discontinuation
After removal of the patch, buprenorphine serum concentrations decrease gradually and thus the analgesic effect is maintained for a certain amount of time. This should be considered when therapy with Sevodyne is to be followed by other opioids. As a general rule, a subsequent opioid should not be administered within 24 hours after removal of the patch. At present, only limited information is available on the starting dose of other opioids administered after discontinuation of the transdermal patch (see section 4.5).
Conversion from opioids
Sevodyne can be used as an alternative to treatment with other opioids. Such patients should be started on the lowest available dose (Sevodyne 5 microgram/hour transdermal patch) and continue taking short-acting supplemental analgesics (see section 4.5) during titration, as required.
Special populations
Elderly
No dosage adjustment of Sevodyne is required in elderly patients.
Renal impairment
No special dose adjustment of Sevodyne is necessary in patients with renal impairment.
Hepatic impairment
There is no need for dosage adjustment of thus medicine in patients with mild to moderate hepatic impairment.
Buprenorphine is metabolised in the liver. The intensity and duration of its action may be affected in patients with impaired liver function. Therefore patients with hepatic insufficiency should be carefully monitored during treatment with Sevodyne.
Patients with severe hepatic impairment may accumulate buprenorphine during Sevodyne treatment. Consideration of alternate therapy should be considered, and Sevodyne should be used with caution, if at all, in such patients.
Paediatric population
The safety and efficacy of Sevodyne in children and adolescents below 18 years of age has not been established. No data are available.
Method of administration
Sevodyne is for transdermal use.
The patch must not be divided or cut into pieces.
The patch should not be used if the seal is broken.
Patch application
In order to ensure effective analgesia of buprenorphine and to minimise the potential of skin reactions (see section 4.4), the following directions of use should be followed:
Sevodyne should be applied to non-irritated, intact skin of the upper outer arm, upper chest, upper back or the side of the chest, but not to any parts of the skin with large scars. Sevodyne should be applied to a relatively hairless or nearly hairless skin site. If none are available, the hair at the site should be cut with scissors, not shaven.
If the application site must be cleaned, it should be done with clean water only. Soaps, alcohol, oils, lotions or abrasive devices must not be used. The skin must be dry before the patch is applied. Sevodyne should be applied immediately after removal from the sealed sachet. Following removal of the protective layer, the transdermal patch should be pressed firmly in place with the palm of the hand for approximately 30 seconds, making sure the contact is complete, especially around the edges. If the edges of the patch begin to peel off, the edges may be taped down with suitable skin tape to ensure a 7 day period of wear. The patch should be worn continuously for 7 days. Bathing, showering, or swimming should not affect the patch. If a patch falls off, a new one should be applied and worn for 7 days.
Treatment goals and discontinuation
Before initiating treatment with Sevodyne, a treatment strategy including treatment duration and treatment goals, and a plan for end of the treatment, should be agreed together with the patient, in accordance with pain management guidelines. During treatment, there should be frequent contact between the physician and the patient to evaluate the need for continued treatment, consider discontinuation and to adjust dosages if needed. When a patient no longer requires therapy with Sevodyne, it may be advisable to taper the dose gradually to prevent symptoms of withdrawal. In absence of adequate pain control, the possibility of hyperalgesia, tolerance and progression of underlying disease should be considered (see section 4.4).
Duration of treatment
Sevodyne should not be used longer than necessary.
- patients with known hypersensitivity to the active substance or to any of the excipients listed in section 6.1,
- opioid dependent patients and for narcotic withdrawal treatment,
- conditions in which the respiratory centre and function are severely impaired or may become so,
- patients who are receiving MAO inhibitors or have taken them within the last two weeks (see section 4.5)
- patients suffering from myasthenia gravis
- patients suffering from delirium tremens.
Sevodyne should be used with particular caution in patients with:
- Respiratory depression
- CNS depressants co-administration (see below and section 4.5)
- Serotonergic agents (see below and section 4.5)
- Psychological dependence [addiction], abuse profile and history of substance and/or alcohol abuse (see below)
- Sleep apnoea
- Acute alcohol intoxication
- Head injury, intracranial lesions or increased intracranial pressure, shock, a reduced level of consciousness of uncertain origin
- Severely impaired hepatic function (see section 4.2)
- Constipation
Do not use for acute post-operative pain owing to the increased risk of persistent post-operative opioid use (PPOU) and opioid-induced ventilatory impairment (OIVI).
Respiratory depression
Significant respiratory depression has been associated with buprenorphine, particularly by the intravenous route. A number of overdose deaths have occurred when addicts have intravenously abused buprenorphine, usually with benzodiazepines concomitantly. Additional overdose deaths due to ethanol and benzodiazepines in combination with buprenorphine have been reported (see Section 4.9). Caution should be exercised when prescribing Sevodyne to patients known to have, or suspected of having, problems with drug or alcohol abuse or serious mental illness.
Sleep-related breathing disorders
Opioids can cause sleep-related breathing disorders including central sleep apnoea (CSA) and sleep-related hypoxemia. Opioid use increases the risk of CSA in a dose-dependent fashion. In patients who present with CSA, consider decreasing the total opioid dosage.
Patients with fever or exposed to external heat:
While wearing the patch, patients should be advised to avoid exposing the application site to external heat sources, such as heating pads, electric blankets, heat lamps, sauna, hot tubs, and heated water beds, etc., as an increase in absorption of buprenorphine may occur. When treating febrile patients, one should be aware that fever may also increase absorption resulting in increased plasma concentrations of buprenorphine and thereby increased risk of opioid reactions.
Risk from concomitant use of sedative medicines such as benzodiazepines or related drugs
Concomitant use of Sevodyne and sedative medicines such as benzodiazepines or related drugs may result in sedation, respiratory depression, coma and death. Because of these risks, concomitant prescribing with these sedative medicines should be reserved for patients for whom alternative treatment options are not possible. If a decision is made to prescribe Sevodyne concomitantly with sedative medicines, the lowest effective dose should be used, and the duration of treatment should be as short as possible.
The patients should be followed closely for signs and symptoms of respiratory depression and sedation. In this respect, it is strongly recommended to inform patients and their caregivers to be aware of these symptoms (see section 4.5).
Serotonin syndrome
Concomitant administration of Buprenorphine and other serotonergic agents, such as MAO inhibitors, selective serotonin re-uptake inhibitors (SSRIs), serotonin norepinephrine re-uptake inhibitors (SNRIs) or tricyclic antidepressants may result in serotonin syndrome, a potentially life-threatening condition (see section 4.5).
If concomitant treatment with other serotonergic agents is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.
Symptoms of serotonin syndrome may include mental-status changes, autonomic instability, neuromuscular abnormalities, and/or gastrointestinal symptoms.
If serotonin syndrome is suspected, a dose reduction or discontinuation of therapy should be considered depending on the severity of the symptoms.
Buprenorphine is a µ-opioid agonist, acting as a full agonist with respect to analgesia and as a partial agonist with respect to its respiratory depressant properties (see section 5.1).
Tolerance and opioid use disorder (abuse and dependence)
Tolerance, physical and psychological dependence, and opioid use disorder (OUD) may develop upon repeated administration of opioids such as Sedvodyne. Repeated use of Sevodyne can lead to OUD. A higher dose and longer duration of opioid treatment can increase the risk of developing OUD. Abuse or intentional misuse of Sevodyne may result in overdose and/or death. The risk of developing OUD is increased in patients with a personal or a family history (parents or siblings) of substance use disorders (including alcohol use disorder), in current tobacco users or in patients with a personal history of other mental health disorders (e.g. major depression, anxiety and personality disorders.
Before initiating treatment with Sevodyne and during the treatment, treatment goals and a discontinuation plan should be agreed with the patient (see section 4.2). Before and during treatment the patient should also be informed about the risks and signs of OUD. If these signs occur, patients should be advised to contact their physician.
Patients will require monitoring for signs of drug-seeking behavior (e.g. too early requests for refills). This includes the review of concomitant opioids and psycho-active drugs (like benzodiazepines). For patients with signs and symptoms of OUD, consultation with an addiction specialist should be considered
Drug withdrawal syndrome
Prior to starting treatment with any opioids, a discussion should be held with patients to put in place a withdrawal strategy for ending treatment with buprenorphine.
Drug withdrawal syndrome may occur upon abrupt cessation of therapy or dose reduction. Withdrawal (abstinence syndrome), when it occurs, is generally mild, begins after 2 days and may last up to 2 weeks. When a patient no longer requires therapy, it is advisable to taper the dose gradually to minimise symptoms of withdrawal. Tapering from a high dose may take weeks to months.
The opioid drug withdrawal syndrome is characterised by some or all of the following: restlessness, lacrimation, rhinorrhoea, yawning, perspiration, chills, myalgia, mydriasis and palpitations. Other symptoms may also develop including irritability, agitation, anxiety, hyperkinesia, tremor, weakness, insomnia, anorexia, abdominal cramps, nausea, vomiting, diarrhoea, increased blood pressure, increased respiratory rate or heart rate.
If women use this drug during pregnancy, there is a risk that their newborn infants will experience neonatal withdrawal syndrome.
Hyperalgesia
Hyperalgesia may be diagnosed if the patient on long-term opioid therapy presents with increased pain. This might be qualitatively and anatomically distinct from pain related to disease progression or to breakthrough pain resulting from development of opioid tolerance. Pain associated with hyperalgesia tends to be more diffuse than the pre-existing pain and less defined in quality. Symptoms of hyperalgesia may resolve with a reduction of opioid dose.
Skin reactions at application site
To minimise the risk of occurrence of application site skin reactions, it is important to follow the posology instructions (see section 4.2).
Application site reactions with Sevodyne are usually presented by a mild or moderate skin inflammation (contact dermatitis), and their typical appearance may include erythema, oedema, pruritus, rash, small blisters (vesicles), and painful/burning sensation at the application site. Most commonly the cause is skin irritation (irritant contact dermatitis), and these reactions resolve spontaneously after Sevodyne removal.
Patients and caregivers should be instructed accordingly to monitor the application sites for such reactions. If allergic contact dermatitis is suspected, relevant diagnostic procedures should be performed to determine if sensitisation has occurred and its actual cause (buprenorphine and/or other ingredients of the patch).
Since CYP3A4 inhibitors may increase concentrations of buprenorphine (see section 4.5), patients already treated with CYP3A4 inhibitors should have their dose of Sevodyne carefully titrated since a reduced dosage might be sufficient in these patients.
Buprenorphine is not recommended for analgesia in the immediate post-operative period or in other situations characterised by a narrow therapeutic index or a rapidly varying analgesic requirement.
Endocrine system
Opioids may influence the hypothalamic-pituitary-adrenal or –gonadal axes. Some changes that can be seen include an increase in serum prolactin, and decreases in plasma cortisol and testosterone. Clinical symptoms may be manifest from these hormonal changes.
Effect of other active substances on the pharmacokinetics of buprenorphine:
Buprenorphine is primarily metabolised by glucuronidation and to a lesser extent (about 30%) by CYP3A4.
Concomitant treatment with CYP3A4 inhibitors may lead to elevated plasma concentrations with intensified efficacy of buprenorphine.
Studies with the CYP3A4 inhibitor ketoconazole did not produce clinically relevant increases in mean maximum (Cmax) or total (AUC) buprenorphine exposure following buprenorphine with ketoconazole as compared to buprenorphine alone.
The interaction between buprenorphine and CYP3A4 enzyme inducers has not been studied.
Co-administration of buprenorphine and enzyme inducers (e.g. phenobarbital, carbamazepine, phenytoin and rifampicin) could lead to increased clearance which might result in reduced efficacy.
Reductions in hepatic blood flow induced by some general anaesthetics (e.g. halothane) and other medicinal products may result in a decreased rate of hepatic elimination of buprenorphine.
Pharmacodynamic interactions:
Sevodyne must not be used concomitantly with MAOIs or in patients who have received MAOIs within the previous two weeks (see section 4.3).
Buprenorphine should be used cautiously when co-administered with:
• Serotonergic medicinal products, such as MAO inhibitors, selective serotonin re-uptake inhibitors (SSRIs), serotonin norepinephrine re-uptake inhibitors (SNRIs) or tricyclic antidepressants as the risk of serotonin syndrome, a potentially life-threatening condition, is increased (see section 4.4).
• Other central nervous system depressants: other opioid derivatives (analgesics and antitussives containing e.g. morphine, dextropropoxyphene, codeine, dextromethorphan or noscapine). Certain antidepressants, sedative H1-receptor antagonists, alcohol, anxiolytics, neuroleptics, clonidine and related substances. These combinations increase the CNS depressant activity.
• Sedative medicines such as benzodiazepines or related drugs as concomitant use increases the risk of sedation, respiratory depression, coma and death because of additive CNS depressant effect. The dose and duration of concomitant use should be limited (see section 4.4). Such agents include sedatives or hypnotics, general anesthetic's, other opioid analgesics, phenothiazines, centrally acting anti-emetics, benzodiazepines and alcohol. Serotonergic medicinal products, such as selective serotonin re-uptake inhibitors (SSRIs), serotonin norepinephrine re-uptake inhibitors (SNRIs) or tricyclic antidepressants as the risk of serotonin syndrome, a potentially life-threatening condition, is increased (see section 4.4).
At typical analgesic doses buprenorphine is described to function as a pure mu receptor agonist. In buprenorphine clinical studies subjects receiving full mu agonist opioids (up to 90 mg oral morphine or oral morphine equivalents per day) were transferred to buprenorphine. There were no reports of abstinence syndrome or opioid withdrawal during conversion from entry opioid to buprenorphine (see section 4.4).
Sedative medicines such as benzodiazepines or related drugs:
The concomitant use of opioids with sedative medicines such as benzodiazepines or related drugs increases the risk of sedation, respiratory depression, coma and death because of additive CNS depressant effect. The dose and duration of concomitant use should be limited (see section 4.4).
The concomitant use of Sevodyne with gabapentinoids (gabapentin and pregabalin) may result in respiratory depression, hypotension, profound sedation, coma or death (see section 4.4).
Concomitant administration of buprenorphine with anticholinergics or medications with anticholinergic activity (e.g. tricyclic antidepressants, antihistamines, antipsychotics, muscle relaxants, anti-Parkinson drugs) may result in increased anticholinergic adverse effects.
Pregnancy
There are no or limited amount of data from the use of buprenorphine in pregnant women. Studies in animals have shown reproductive toxicity (see section 5.3). The potential risk for humans is unknown.
Buprenorphine crosses the placenta and buprenorphine and the active metabolite norbuprenorphine can be detected in newborn serum, urine and meconium following in utero exposure.
Towards the end of pregnancy high doses of buprenorphine may induce respiratory depression in the neonate even after a short period of administration. Regular use during pregnancy may cause drug dependence in the foetus, leading to withdrawal symptoms in the neonate.
Therefore, buprenorphine should not be used during pregnancy and in women of childbearing potential who are not using effective contraception unless the potential benefit justifies the potential risk to the foetus.
If opioid use is required for a prolonged period in a pregnant woman, advise the patient of the risk of neonatal opioid withdrawal syndrome and ensure that appropriate treatment will be available.
Administration during labour may depress respiration in the neonate and an antidote for the child should be readily available.
Breastfeeding
Buprenorphine is excreted in human milk. Studies in rats have shown that buprenorphine may inhibit lactation. Available pharmacodynamic/toxicological data in animals has shown excretion of buprenorphine in milk (see section 5.3). A risk to the newborn/infants cannot be excluded. This medicine should be used with caution during breastfeeding.
Administration to nursing women is not recommended as buprenorphine may be secreted in breast milk and may cause respiratory depression in the infant.
Fertility
No human data on the effect of buprenorphine on fertility are available. In a fertility and early embryonic development study, no effects on reproductive parameters were observed in male or female rats (see section 5.3).
Buprenorphine has a major influence on the ability to drive and use machines. Even when used according to instructions, buprenorphine may affect the patient's reactions to such an extent that road safety and the ability to operate machinery may be impaired. This applies particularly in the beginning of treatment and in conjunction with other centrally acting substances including alcohol, tranquillisers, sedatives and hypnotics. An individual recommendation should be given by the physician. A general restriction is not necessary in cases where a stable dose is used.
Patients who are affected and experience undesirable effects (e.g. dizziness, drowsiness, blurred vision) during treatment initiation or titration to a higher dose should not drive or use machines, for at least 24 hours after the patch has been removed.
This medicine can impair cognitive function and can affect a patient's ability to drive safely. This class of medicine is in the list of drugs included in regulations under 5a of the Road Traffic Act 1988. When prescribing this medicine, patients should be told:
• The medicine is likely to affect your ability to drive.
• Do not drive until you know how the medicine affects you.
• It is an offence to drive while you have this medicine in your body over a specified limit unless you have a defence (called the 'statutory defence').
• This defence applies when:
o The medicine has been prescribed to treat a medical or dental problem; and
o You have taken it according to the instructions given by the prescriber and in the information provided with the medicine and
o It was not affecting your ability to drive safely.
Serious adverse reactions that may be associated with buprenorphine therapy in clinical use are similar to those observed with other opioid analgesics, including respiratory depression (especially when used with other CNS depressants) and hypotension (see section 4.4).
The following undesirable effects have occurred:
System organ class
MedDRA
Very common (≥1/10)
Common (≥1/100 to <1/10)
Uncommon (≥1/1000 to <1/100)
Rare (≥1/10,000 to <1/1000)
Very rare (<1/10,000)
Not known (cannot be estimated from the available data)
Immune system disorders
Hypersensitivity
Anaphylactic reaction
Anaphylactoid reaction
Metabolic and nutritional disorders
Anorexia
Dehydration
Psychiatric disorders
Confusion, Depression, Insomnia, Nervousness, Anxiety
Affect liability, Sleep disorder, Restlessness, Agitation, Euphoric mood, Hallucinations, Decreased libido, Nightmares, Aggression
Psychotic disorder
Drug dependence (see section 4.4), Mood swings
Depersonalisation
Nervous system disorders
Headache, Dizziness, Somnolence
Tremor
Sedation, Dysgeusia, Dysarthria, Hypoaesthesia, Memory impairment, Migraine, Syncope, Abnormal coordination, Disturbance in attention, Paraestheia
Balance disorder, Speech disorder
Involuntary muscle contractions
Seizures, Sleep apnoea syndrome, Hyperalgesia
Eye disorders
Dry eye, Blurred vision
Visual disturbance, Eyelid oedema, Miosis
Ear and labyrinth disorders
Tinnitus, Vertigo
Ear pain
Cardiac disorders
Palpitations, Tachycardia
Angina pectoris
Vascular disorders
Hypotension, Circulatory collapse, Hypertension, Flushing
Vasodilatation, Orthostatic hypotension
Respiratory, thoracic and mediastinal disorders
Dyspnoea
Cough, Wheezing, Hiccups
Respiratory depression, Respiratory failure, Asthma aggravated, Hyperventilation, Rhinitis
Gastrointestinal disorders
Constipation, Nausea, Vomiting
Abdominal pain, Diarrhoea, Dyspepsia, Dry mouth
Flatulence
Dysphagia, Ileus
Diverticulitis
Hepatobiliary disorders
Biliary colic
Skin and subcutaneous tissue disorders
Pruritus, Erythema
Rash, Sweating, Exanthema
Dry skin, Urticaria,
Face oedema
Pustules, Vesicles
Contact dermatitis, Application skin discolouration
Musculoskeletal and connective tissue disorders
Muscular weakness
Myalgia, Muscle spasms
Renal and urinary disorders
Urinary incontinence, Urinary retention, Urinary hesitation
Reproductive system and breast disorders
Erectile dysfunction, Sexual dysfunction
General disorders and administration site conditions
Application site reaction1
Tiredness, Asthenic conditions, Peripheral oedema
Fatigue, Pyrexia, Rigors, Oedema, Drug withdrawal syndrome, Chest pain
Influenza like illness
Neonatal drug withdrawal syndrome, Drug tolerance
Investigations
Alanine aminotransferase increased, Weight decreased
Injury, poisoning and procedural complications
Accidental injury, Fall
1 Includes common signs and symptoms of contact dermatitis (irritative or allergic): erythema, oedema, pruritus, rash, vesicles, painful/burning sensation at the application site.
* In some cases delayed local allergic reactions (allergic contact dermatitis) occurred with marked signs of inflammation. Mechanical injuries during patch removal (e.g. laceration) are also possible in patients with fragile skin. Chronic inflammation may lead to long-lasting sequelae, such as post inflammatory hyper- and hypopigmentation, as well as dry and thick scaly skin lesions, which may closely resemble scars. In such cases treatment with Sevodyne should be terminated (see sections 4.3 and 4.4).
Drug dependence
Repeated use of Sevodyne can lead to drug dependence, even at therapeutic doses. The risk of drug dependence may vary depending on a patient's individual risk factors, dosage, and duration of opioid treatment (see section 4.4).
Buprenorphine has a low risk of physical dependence. After discontinuation of Sevodyne, withdrawal symptoms are unlikely. This may be due to the very slow dissociation of buprenorphine from the opioid receptors and to the gradual decrease of buprenorphine plasma concentrations (usually over a period of 30 hours after removal of the last patch). However, after long-term use of Sevodyne, withdrawal symptoms similar to those occurring during opioid withdrawal, cannot be entirely excluded. These symptoms include agitation, anxiety, nervousness, insomnia, hyperkinesia, tremor and gastrointestinal disorders.
Reporting of suspected adverse reactions
Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme (www.mhra.gov.uk/yellowcard) or search for MHRA Yellow Card in the Google Play or Apple App Store.
Patients should be informed of the signs and symptoms of overdose and to ensure that family and friends are also aware of these signs and to seek immediate medical help if they occur.
Symptoms: Symptoms similar to those of other centrally acting analgesics are to be expected. These include respiratory depression, sedation, drowsiness, nausea, vomiting, cardiovascular collapse and marked miosis.
Treatment: Any patches should be removed from the patient's skin. A patent airway should be established and maintained, respiration should be assisted or controlled as indicated and adequate body temperature and fluid balance should be maintained. Oxygen, intravenous fluids, vasopressors and other supportive measures should be employed as indicated.
A specific opioid antagonist such as naloxone may reverse the effects of buprenorphine, although naloxone may be less effective in reversing the effects of buprenorphine than other µ-opioid agonists. Treatment with continuous intravenous naloxone should begin with the usual doses but high doses may be required.
Ask anything about Sevodyne 20 microgram/hour transdermal patch. The assistant answers only from this leaflet — if the leaflet does not cover it, it will say so. It does not give medical advice.
Answers come from the patient leaflet published on the electronic medicines compendium (emc). They are not medical advice. Ask a pharmacist or your GP if you are unsure. For urgent help call NHS 111, or 999 in an emergency.
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