Pharmacy Guide

Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.

Pharmacy Guide

Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.

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Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution

⚠ This medicine appears to have been discontinued

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 Phenoxymethylpenicillin potassium may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.

Active substance: Phenoxymethylpenicillin potassium

Equivalent medicines (same active substance, strength and form)

Source: electronic medicines compendium (emc)
Official leaflet: Read the PIL on emc

What it is and what it is used for

for

Phenoxymethylpenicillin Sugar Free Oral Solution is available in two strengths as a powder for reconstitution. The strength you are given will be decided by your doctor. Phenoxymethylpenicillin, the active ingredient, is an antibiotic, which belongs to a group of medicines called penicillins, which are used to kill bacteria that cause infections in your body. Your medicine is used to:  treat bacterial infections of the ear, throat, respiratory tract, skin and soft tissues  prevent infections such as rheumatic fever or chorea recurring  prevent pneumococcal infection (e.g. in asplenia and in patients with sickle cell disease).

2.

What you need to know before you take it

e Phenoxymethylpenicillin Sugar Free Oral Solution

Do not take Phenoxymethylpenicillin Sugar Free Oral Solution if:  You are allergic to Phenoxymethylpenicillin or any of the other ingredients of this medicine (listed in section 6).  You have ever had a bad reaction or allergic reaction to any penicillin-type antibiotic including cephalosporin antibiotic or other drugs  You have ever had a skin rash or swelling of the face or neck or shortness of breath when taking any antibiotic Warnings and precautions Talk to your doctor or pharmacist before taking Phenoxymethylpenicillin Sugar Free Oral Solution if:

You suffer from any stomach problems, accompanied by vomiting or diarrhoea – your doctor may decide that an oral antibiotic is not of benefit to you You suffer from any kidney problems, as you may be given a lower dose than normal You suffer from allergies and/or asthma. You suffer from allergic reactions to penicillin, cephalosporins or other drugs if you are taking the contraceptive pill. You may need to take extra contraceptive precaution such as using a condom

   

Potentially life-threatening skin rashes (Stevens Johnson syndrome, toxic epidermal necrolysis) have been reported with the use of some penicillin's appearing initially as reddish target-like spots or circular patches often with central blisters on the trunk. Additional signs to look for include ulcers in the mouth, throat, nose, genitals and conjunctivitis (red and swollen eyes). If you develop a rash or these skin symptoms, stop taking Phenoxymethylpenicillin Powder for Oral Solution, seek urgent advice from a doctor and tell them that you are taking this medicine. Prolonged use of an antibiotic may result in infections due to bacteria resistance to the antibiotic.

Other medicines and Phenoxymethylpenicillin Sugar Free Oral Solution: Your medicine may interfere with other medicines that you may be taking. Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines even those not prescribed, including herbal and homeopathic remedies. Talk to your doctor or pharmacist if you are taking:  

Methotrexate (a drug used to treat cancers and psoriasis) Some other antibiotics (tetracyclines, erythromycin, neomycin and chloramphenicol have been reported to reduce the effect of penicillin) Sulfinpyrazone or probenecid (medicines used to treat gout) Anti-coagulants (e.g. warfarin – to prevent blood clots) Oral typhoid vaccine (penicillin can stop this from working) The contraceptive pill (you will need to take extra contraceptive precautions such as using a condom).

   

Laboratory tests In patients undergoing long-term treatment with phenoxymethylpenicillin, blood counts and also liver and kidney function should be monitored. Tell your doctor if you are having urine tests for diabetes or certain liver function tests, as the medicine can affect the results of some tests.

Phenoxymethylpenicillin Sugar Free Oral Solution with food and drink 

Guar gum (used as a thickening agent and normally found in puddings and ice-cream and benefiber) can reduce the absorption of phenoxymethylpenicillin.

Pregnancy and breast-feeding If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

You should not take Phenoxymethylpenicillin Sugar Free Powder for Oral Suspension if you are breast-feeding. Driving and using machines This medicine should not affect your ability to drive or to use machinery however some of the side effects may affect your ability to drive and use machines. Important information about some of the ingredients in your medicine This medicine contains 1/3 mmol potassium per 125mg. This should be taken into consideration by patients with reduced kidney function or patients on a controlled potassium diet. Sorbitol is a source of fructose. If your doctor has told you that you (or your child) have an intolerance to some sugars or if you have been diagnosed with hereditary fructose intolerance (HFI), a rare genetic disorder in which a person cannot break down fructose, talk to your doctor before you (or your child) take or receive this medicine. Sorbitol may cause gastrointestinal discomfort and mild laxative effect. This medicine contains less than 1 mmol sodium (23mg) per unit in each 5 ml dose, that is essentially to say 'sodium-free'

3.

How to take it

Phenoxymethylpenicillin Sugar Free Oral Solution

Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure. The dose will depend on the patient and will be decided by your doctor. The usual doses for each age group are as follows: Adults including the elderly and children over 12 years 250 mg to 500 mg every six hours (one to two 5 ml to spoonful's of 250 mg/5ml every six hours) Children Infants (up to 1 year): 62.5 mg every 6 hours (a half 5 ml spoonful of 125/5ml every six hours) 1- 5 years: 125mg every six hours (one 5 ml spoonful of 125 mg/5ml every six hours) 6-12 years: 250mg every six hours (one 5 ml spoonful of 250 mg/5 ml or two 5ml spoonful's of 125 mg/5ml every six hours)

For preventing the recurrence of rheumatic fever or chorea: The usual dose is 250 mg twice daily (one 5ml spoonful of 250mg/5ml twice daily) on a continuing basis. For the prevention of infection in patients without a spleen or patients with sickle cell disease: For adults and children over 12 years, the dosage is 500mg every 12 hours. For children aged between 6 and 12 years, the dosage is 250mg every 12 hours. For children below 5 years , the dosage is 125mg every 12 hours. For children over 12 years the dose should not exceed the maximum adult doses. For elderly, the dosage is as for adult. The dosage should be lowered in poor renal function. Patients with kidney and liver problems  If you have kidney problems the dose might be changed by your doctor.  Dosage might be changed by your doctor if you have liver problems along with kidney problem. When to take your medicine

Phenoxymethylpenicillin Sugar Free Oral Solution is usually prescribed to be taken four times a day. It is best to take it as evenly spaced as possible. Take your medicine on an empty stomach either half an hour before a meal or at least three hours after a meal. If you take more Phenoxymethylpenicillin Sugar Free Oral Solution than you should If you accidentally take too much medicine, contact your doctor or pharmacist who will recommend what action you should take. If you forget to take Phenoxymethylpenicillin Sugar Free Oral Solution If you forget to take a dose, take it as soon as you remember, unless it is almost time for your next dose. Do not take a double dose to make up for a forgotten dose. If you stop taking this medicine Keep taking this medicine until your doctor tells you to stop. Do not stop taking it just because you feel better. If you stop taking the medicine, your condition may re-occur or get worse. If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4.

Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them. Hypersensitivity/Allergic reactions of all intensity levels – to the point of anaphylactic shock have also been observed after oral penicillin use. Severe anaphylactoid reactions, which occur significantly less often after oral administration of penicillin than after intravenous or intramuscular administration, may require appropriate emergency management. STOP taking the medicine and tell your doctor IMMEDIATELY if you experience any of the following:  Hypersensitivity of all severities (allergic reaction) (frequency – very rare)  Symptoms may include: difficulty breathing, muscle weakness, fever, joint pain, changes in blood counts, sudden swelling of the lips, cheeks, eyelids, tongue and throat, laryngeal oedema (accumulation of fluid in the larynx), bronchospasm (wheezing, shortness of breath), increase in the heartbeat, vasculitis (inflammation of blood vessels) and a sudden drop in blood pressure up to life threatening shock  A serious skin reaction characterized by reddish non-elevated target like or circular patches on the trunk, often cetral blisters or mucosal lesions, skin peeling, ulcers of mouth, throat, genitals and eyes. These serious skin rashes can be preceded by fever and flu like symptoms (Toxic epidermal necrosis (frequnecy – rare)/Stevens -Johnsons syndrome (frequency – very rare)).  allergic reactions including rash, itching, hives and rarely severe peeling/blistering of the skin (frequency – common)  Serum sickness-like reactions (characterised by fever, chills, joint pains and oedema) (frequency – very rare)  Seizures (frequency not known)  pseudomembranous enterocolitis (bacterial infection of the large intestine. Symptoms include abdominal pain and diarrhoea) Tell your doctor or pharmacist if you notice any of the following and they worry you. Very common side effects (may affect more than 1 in 10):

loss of appetite

Common side effects (may affect up to 1 in 10 people):         

stomach pain pain or discomfort in the upper abdomen (gastric discomfort) gas (flatulence) nausea (feeling sick), vomiting (being sick) diarrhoea inflamed and sore mouth (stomatitis), inflammation of the tongue (glossitis) rash, hives (immediate presence of hives indicates penicillin allergy, use of Phenoxymethylpenicillin should be discontinued). eruption of the skin (exanthema)

Uncommon side effects (may affect up to 1 to 100 people):  

sore mouth black hairy tongue (discolouration of tongue)

Rare side effects (may affect up to 1 in 1,000 people):      

blistering and/or peeling of the skin, severe inflammation of the entire skin surface (shedding of the top layers of your skin (Exfoliative dermatitis)) dry mouth changes in taste change in liver test results blood pressure decreased growth of bacteria or yeast on the tongue

Very rare side effects (may affect up to 1 in 10,000 people):  yellow colour of the skin and whites of the eyes, pale stools (all symptoms of cholestatic jaundice)  Hepatitis  Sore throats, infections, or fever/chills, faster heart rate (may be caused by low white blood cells)  lower-than-normal levels of white blood cells  higher than normal level of white blood cells (eosinophilia)  coagulation disorders (problems with blood clotting (easy bruising or prolonged bleeding))  haemolytic anaemia (may cause lack of energy or tiredness, cold hands/feet, pale skin)  lower-than-normal levels of platelets (a type of blood cell) (more bruises than normal, or worse than normal, small red dots under skin, unusually bleeding (gums/nose), blood in urine/stools)  kidney problems, which might cause blood in the urine or increased amounts of urine (interstitial nephritis)  tooth discolouration Not known side effects (frequency cannot be estimated from the available data):  Pins and needles or numbness (paraesthesia)  central nervous system toxicity (symptoms including but not limited to anxiety, dizziness, numbness, light-headedness, and tinnitus)

If you notice any of the above side effects or notice any other side effects and think your medicine may be causing them you should contact your doctor or pharmacist. 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 Yellow Card Scheme at 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.

5.

How to store it

Phenoxymethylpenicillin Sugar Free Oral Solution

Keep out of the sight and reach of children. This medicine after reconstitution should be stored in a refrigerator between 2°C to 8°C in the container supplied and should be used within 7 days of being dispensed by your pharmacist. Do not transfer it to another container. Shake well before use. Keep it in a secure place where children cannot get at it. Do not use this medicine after the expiry date shown on the outside packaging. Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6.

Contents of the pack and other information

What Phenoxymethylpenicillin Sugar Free Oral Solution contains Phenoxymethylpenicillin Sugar Free Oral Solution contains either 125 mg or 250 mg of phenoxymethylpenicillin in every 5 ml. –

The active substance is Phenoxymethylpenicillin (as phenoxymethylpenicillin potassium). The other ingredients are Sorbitol (E420), Powdarome Strawberry Premium (Nature identical flavouring and natural flavouring, maize maltodextrin, INS1520 propylene glycol) and Sodium Saccharin.

What Phenoxymethylpenicillin looks like and contents of the pack Phenoxymethylpenicillin is a white to off-white fine powder for oral solution, which, when reconstituted as directed, yields a colourless to pale yellow solution. The product is available in a 150 ml HDPE bottle with a child resistant cap. Each bottle contains 100 ml of reconstituted solution with a dosing syringe of 5ml.

Marketing Authorisation Holder and Manufacturer Brown & Burk UK Ltd 5 Marryat Close Hounslow West Middlesex TW4 5DQ UK. This leaflet was last revised on 10/2025.

Frequently asked questions about Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution

How do I take Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution?

Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution comes as oral solution containing 125mg / 5ml. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.

What is the active substance in Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution?

The active substance in Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution is phenoxymethylpenicillin potassium.

Are there equivalent medicines to Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution?

Medicines with the same active substance, strength and form include: Phenoxymethylpenicillin 125 mg/5ml Powder for Oral Solution. They are interchangeable only if your prescriber or pharmacist says so.

Where does this information come from?

This leaflet reproduces the patient information leaflet approved for Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution, as published on the electronic medicines compendium (emc). The version printed inside your medicine’s packaging is the one that applies to you.

Can I get Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution without a prescription?

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.

About this leaflet

The text above reproduces the patient information leaflet approved for this medicine, restructured for easier reading.

Medical disclaimer: This page is for information only and does not replace advice from your doctor or pharmacist. Always read the leaflet supplied with your medicine. If you are unwell, call NHS 111; in an emergency, call 999.

Medicines with the same active substance: Phenoxymethylpenicillin potassium (7 medicines)
See every medicine containing this substance, or browse the full A–Z of active substances.
⚕For healthcare professionals — Summary of Product Characteristics (SmPC)Full SmPC: dosage, interactions, contraindications, warnings+
Technical information intended for healthcare professionals (doctors and pharmacists). The Summary of Product Characteristics (SmPC) is the official document approved by the MHRA/EMA. It does not replace the patient leaflet or a doctor’s advice.

4.1. Therapeutic indications

Phenoxymethylpenicillin and phenoxymethylpenicillin potassium are indicated in the treatment of mild to moderately severe infections associated with micro-organisms whose susceptibility to penicillin is within the range of serum levels attained with the dosage form.

Phenoxymethylpenicillin is indicated for the treatment of the following infections (see Section 4.4 and 5.1)

Streptococcal infections:

Pharyngitis

Scarlet fever

Skin and soft tissue infections (e.g. erysipelas)

Pneumococcal infections:

Pneumonia

Otitis media

Vincent's gingivitis and pharyngitis

Phenoxymethylpenicillin is also indicated for (see section 5.1):

Prophylaxis of rheumatic fever and/or chorea

Prophylaxis of pneumococcal infection (e.g. in asplenia and in patients with sickle cell disease)

Consideration should be given to official guidance on the appropriate use of antibacterial agents.

4.2. Posology and method of administration

Posology

For oral administration only.

The dosage and frequency of Phenoxymethylpenicillin depends on the severity and localisation of the infection and expected pathogens.

Phenoxymethylpenicillin 250 mg is approximately equivalent to 400,000 units.

The treatment of acute otitis media with penicillin V should be limited to five days. However, 5-10 days treatment may be recommended in patients with potential for complications.

To avoid late complications (rheumatic fever), infections with β-haemolytic streptococci should be treated for 10 days.

The usual dosage recommendations are as follows:

Adults and children over12 years: 250-500 mg every six hours

Children: Infants (up to 1 year): 62.5mg every 6 hours. The total daily dose is 250mg in divided doses.

1-5 years: 125 mg every six hours

6-12 years: 250 mg every six hours

Prophylactic Use

Prophylaxis of rheumatic fever/ chorea: 250 mg twice daily on a continuing basis

Prophylaxis of pneumococcal infection (e.g. in asplenia and in sickle cell disease):

Adults and children over 12 years: 500mg every 12 hours.

Children 6-12 years: 250mg every 12 hours.

Children below 5 years: 125mg every 12 hours.

Elderly

The dosage is as for adults. The dosage should be reduced if renal function is markedly impaired.

Renal impairment

The dosage should be reduced if renal function is markedly impaired.

Hepatic impairment

Dosage adjustment may be necessary in patients with impaired liver function when they also have renal failure. In this situation the liver may be a major excretion route.

Method of Administration

Ideally, each dose should be given half an hour before (or at least three hours after) a meal, as ingestion of phenoxymethylpenicillin with meals slightly reduces the absorption of the drug.

For instructions on dilution of the product before administration, see section 6.6.

4.3. Contraindications

Phenoxymethylpenicillin is contraindicated in patients known to be Hypersensitivity to Penicillin including ampicillin or to any of the ingredients listed in section 6.1 and should be used with caution in patients with known histories of allergy.

4.4. Special warnings and precautions for use

Penicillin should be used with caution in individuals with histories of significant allergies and/or asthma.

All degrees of hypersensitivity, including fatal anaphylaxis, have been observed with oral penicillin. These reactions are more likely to occur in individuals with a history of sensitivity to penicillins, cephalosporins and other allergens. Enquiries should be made for such a history before therapy is begun. If any allergic reaction occurs, the drug should be discontinued and the patient treated with the usual agents (e.g. adrenaline and other pressor amines, antihistamines and corticosteroids).

Oral therapy should not be relied upon for patients with severe illness, or with nausea, vomiting, gastric dilation, achalasia or intestinal hypermotility. Occasionally patients do not absorb therapeutic amounts of orally administered penicillin.

Administer with caution in the presence of markedly impaired renal function, as safe dosage may be lower than the usually recommended doses.

Streptococcal infections should be treated for a minimum of 10 days, and post therapy cultures should be performed to confirm the eradication of the organisms.

Prolonged use of antibiotics may result in the development of superinfection due to organisms resistant to that anti-infective including Pseudomonas and Candida.If super infection occurs, appropriate measures should be taken.

Cases of Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) have been reported with the use of penicillins. These are serious and potentially life threatening cutaneous conditions. Patients should be advised of the signs and symptoms of SJS and TEN (e.g., progressive skin rash often with blisters or mucosal lesions) and instructed to discontinue use immediately and seek urgent medical attention.

In patients undergoing long-term Phenoxymethylpenicillin treatment the complete and differential blood count, as well as the liver and kidney function, should be monitored.

Sustained severe diarrhoea should prompt suspicion of pseudomembranous colitis. As this condition may be life-threatening phenoxymethylpenicillin should be withdrawn immediately and treatment guided by bacteriologic studies. It should be noted that each 125mg dose contains about 1/3mmol of potassium, which may be harmful to people on low potassium diets and may cause stomach upset, diarrhoea and hyperkalaemia. High doses should be used with caution in patients receiving potassium-containing drugs or potassium sparing-diuretics.

Severe empyema, bacteraemia, pericarditis, meningitis and arthritis should not be treated with Penicillin V during the acute phase.

Patients with a past history of rheumatic fever receiving continuous prophylaxis may harbour penicillin-resistant organisms. In these patients, the use of another prophylactic agent should be considered.

Oral penicillin should not be used as adjunctive prophylaxis for genito - urinary instrumentation or surgery, lower intestinal tract surgery, sigmoidoscopy and child birth.

Information about excipients:

Potassium:

This medicine contains 1/3 mmol potassium per 125mg. This should be taken into consideration by patients with reduced kidney function or patients on a controlled potassium diet.

Sorbitol:

Patients with hereditary fructose intolerance (HFI) should not take/be given this medicinal product.

Sodium:

This medicine contains less than 1 mmol sodium (23 mg) per 5 ml dose, that is to say essentially 'sodium-free'.

4.5. Interaction with other medicinal products and other forms of interaction

Aminoglycosides: Neomycin is reported to reduce the absorption of phenoxymethylpenicillin.

Anticoagulants: Penicillins may interfere with anticoagulant control.

Bacteriostatic antibiotics: Certain bacteriostatic antibiotics such as Chloramphenicol, Erythromycin and Tetracyclines have been reported to antagonise the bactericidal activity of penicillins and concomitant use is not recommended.

Guar gum: Reduced absorption of Phenoxymethylpenicillin.

Methotrexate: Use of Phenoxymethylpenicillin while taking methotrexate can cause reduced excretion of methotrexate thereby increasing the risk of toxicity.

Probenecid: Reduced excretion of phenoxymethylpenicillin by competing with it for renal tubular secretion.

Sulfinpyrazone: Excretion of penicillins reduced by sulfinpyrazone.

Typhoid vaccine (oral): Penicillins may inactivate oral typhoid vaccine if ingested concomitantly.

Laboratory tests: Non enzymatic methods of detecting glucose in the urine may show false positive results during treatment with phenoxymethylpenicillin. Phenoxymethylpenicillin may also interfere with tests for urobilinogen.

4.6. Fertility, pregnancy and lactation

Fertility

Fertility data for phenoxymethylpenicillin are not available.

Pregnancy:

There are no or a limited amount of data from the use of Phenoxymethylpenicillin in pregnant women. As a precautionary measure, it is preferable to avoid the use of Phenoxymethylpenicillin during pregnancy.

Lactation:

Phenoxymethylpenicillin metabolites are excreted in human milk, presenting the risk of candidiasis and also of central nervous system toxicity due to prematurity of the blood brain barrier. There is a theoretical possibility of later sensitisation.

4.7. Effects on ability to drive and use machines

None known

4.8. Undesirable effects

The most common reactions to oral penicillin are gastrointestinal effects and hypersensitivity reactions. Hypersensitivity reactions of all intensities - to the point of anaphylactic shock- have also been observed after oral penicillin use. Severe anaphylactoid reactions, which occur significantly less often after oral administration of penicillin than after intravenous or intramuscular administration, may necessitate appropriate emergency management.

The following convention has been utilised for the classification of undesirable effects: -

Very common (≥1/10)

Common (≥1/100, <1/10)

Uncommon (≥1/1000, <1/100)

Rare (≥1/10,000, <1/1000)

Very rare (<1/10,000)

Not known (cannot be estimated from the available data).

Infections and infestations

Very rare

A pseudomembranous colitis may occur, mostly caused by Clostridioides difficile

Blood and lymphatic system disorders

Very rare

Changes in blood counts, including, thrombocytopenia, granulocytopenia, agranulocytosis neutropenia, leukopenia, Eosinophilia, pancytopenia and haemolytic anaemia.

These changes are reversible on discontinuation. Coagulation disorders have also been reported.

Immune system disorders

Common

Allergic reactions (typically manifest as skin reactions). Urticarial, erythematous or mobilliform rash, pruritus may occur

Very rare

Serious allergic reactions including drug fever, arthralgia, eosinophilia, angioedema, laryngeal oedema, bronchospasm, tachycardia, dyspnoea, serum sickness, hypersensitivity vasculitis and dropping of blood pressure up to life threatening shock.

Frequently fever and eosinophilia will be the only manifestations of penicillin hypersensitivity.

Metabolism and Nutrition Disorders

Very common

Decreased appetite

Nervous system disorders

Rare

Taste disorder

Not Known

Central nervous system toxicity including convulsions (especially with high doses or in severe renal impairment); paraesthesia may occur with prolonged use.

Gastrointestinal disorders

Common

Gastric discomfort, flatulence, nausea, vomiting, abdominal pain, diarrhoea, glossitis, stomatitis. These disorders are usually light and abate during or at the latest after discontinuing treatment.

Uncommon

Sore mouth and black hairy tongue (discolouration of tongue)

Rare

Dry mouth

Very rare

tooth discolouration

Hepatobiliary disorders

Rare

Transiently raised liver enzymes

Very rare

Hepatitis and cholestatic jaundice

Skin and subcutaneous tissue disorders

Common

Rash

Rare

Toxic epidermal necrolysis, Exfoliative dermatitis

Very rare

Severe skin reactions such as Stevens-Johnson syndrome

Renal and urinary disorders

Very rare

Interstitial nephritis

Investigations

Rare

blood pressure decreased

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 Yellow Card Scheme at Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

4.9. Overdose

Symptoms: A large oral overdose of penicillin may cause nausea, vomiting, stomach pain, diarrhoea, and rarely, major motor seizures. If other symptoms are present, consider the possibility of an allergic reaction. Hyperkalaemia may result from overdosage, particularly for patients with renal insufficiency.

Management: No specific antidote is known. Symptomatic and supportive therapy is recommended. Activated charcoal with a cathartic, such as sorbitol may hasten drug elimination. Penicillin may be removed by haemodialysis.

💬 Ask about this leaflet

Ask anything about Phenoxymethylpenicillin Sugar Free 125mg / 5ml Powder for Oral Solution. 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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