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 Posaconazole may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.
for
This medicine contains the active substance posaconazole. This belongs to a group of medicines called "antifungals". It is used to prevent and treat many different fungal infections. This medicine works by killing or stopping the growth of some types of fungi that can cause infections. Posaconazole can be used in adults to treat the following types of fungal infections when other antifungal medicines have not worked or you have had to stop taking them:
This medicine can also be used to prevent fungal infections in adults who are at high risk of getting a fungal infection, such as:
e Posaconazole
Do not take Posaconazole:
Children Posaconazole should not be used in children and adolescents (17 years of age and younger). Other medicines and Posaconazole Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. Do not take Posaconazole if you are taking any of the following:
• • • •
vincristine, vinblastine and other "vinca alkaloids" (used to treat cancer); venetoclax (used to treat cancer); ciclosporin (used during or after transplant surgery); tacrolimus and sirolimus (used during or after transplant surgery);
• •
rifabutin (used to treat certain infections); medicines used to treat HIV called protease inhibitors (including lopinavir and atazanavir, which are given with ritonavir); midazolam, triazolam, alprazolam or other "benzodiazepines" (used as sedatives or muscle relaxants); diltiazem, verapamil, nifedipine, nisoldipine or other "calcium channel blockers" (used to treat high blood pressure); digoxin (used to treat heart failure); glipizide or other "sulfonylureas" (used to treat high blood sugar); all-trans retinoic acid (ATRA), also called tretinoin (used to treat certain blood cancers).
• • • • •
If any of the above apply to you (or you are not sure), talk to your doctor or pharmacist before taking Posaconazole. Posaconazole with food and drink To improve absorption of posaconazole, whenever possible it should be taken during or immediately after food or a nutritional drink (see section 3 "How to take Posaconazole"). There is no information on the effect of alcohol on posaconazole. Pregnancy and breast-feeding Tell your doctor if you are or think you are pregnant before you start to take Posaconazole. Do not take Posaconazole if you are pregnant unless you are told to by your doctor. If you are a woman who could become pregnant you should use effective contraception while you are taking this medicine. If you become pregnant while you are taking Posaconazole, contact your doctor straight away. Do not breast-feed while taking Posaconazole. This is because small amounts may pass into breast milk. Driving and using machines You may feel dizzy, sleepy, or have blurred vision while taking Posaconazole, which may affect your ability to drive or use tools or machines. If this happens, do not drive or use any tools or machines and contact your doctor. Posaconazole contains glucose Posaconazole contains 2.1 g of glucose per 5 ml of suspension. If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicine. May be harmful to the teeth. Posaconazole contains sodium Posaconazole contains 5.9 mg (0.26 mmol) of sodium per 5 ml of suspension. This medicine contains less than 1 mmol sodium (23 mg) per 5 ml of suspension, that is to say essentially 'sodium-free'. Posaconazole contains sodium benzoate (E211) This medicine contains 2 mg benzoate salt in each ml which is equivalent to 10 mg/5 ml. Benzoate salt may increase jaundice (yellowing of the skin and eyes) in newborn babies (up to 4 weeks old).
3.
Posaconazole
Posaconazole is available in other forms and strengths, however not under this tradename. Do not switch between taking posaconazole tablets and posaconazole oral suspension without talking to your doctor or pharmacist because it may result in a lack of efficacy or an increased risk of adverse reactions. Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure. Your doctor will monitor your response and condition to determine how long Posaconazole needs to be given and whether any change is needed to your daily dose. The table below shows the recommended dose and length of treatment which depend on the type of infection that you have and may be individually adapted for you by your doctor. Do not adapt your dose yourself before consulting your doctor or change your treatment regime. Whenever possible you should take Posaconazole during or immediately after food or a nutritional drink. The oral suspension must be shaken well before use (5 – 10 seconds). Indication Treatment of refractory Fungal Infections (Invasive aspergillosis, Fusariosis, Chromoblastomycosis/ Mycetoma, Coccidioidomycosis) First time treatment of Thrush Prevention of serious Fungal Infections
Recommended dose and length of treatment The recommended dose is 200 mg (one 5 ml spoonful) taken four times daily. Alternatively, if recommended by your doctor, you may take 400 mg (two 5 ml spoonfuls) twice a day provided that you are able to take both doses during or after food or a nutritional drink. On the first day of treatment take 200 mg (one 5 ml spoonful) once. After the first day, take 100 mg (2.5 ml) once a day. Take 200 mg (one 5 ml spoonful) three times a day.
If you take more Posaconazole than you should If you are concerned that you may have taken too much, contact your doctor or healthcare professional immediately. If you forget to take Posaconazole If you have missed a dose, take it as soon as you remember and then carry on as before. However, if it is almost time for your next dose, take your dose when it is due. Do not take a double dose to make up for a forgotten dose. If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse. 4.
Possible side effects
Like all medicines, this medicine can cause side effects, although not everybody gets them. Serious side effects Tell your doctor, pharmacist or nurse straight away if you notice any of the following serious side effects – you may need urgent medical treatment:
• •
•
nausea or vomit (feeling or being sick), diarrhoea signs of liver problems – these include yellowing of your skin or whites of the eyes, unusually dark urine or pale faeces, feeling sick for no reason, stomach problems, loss of appetite or unusual tiredness or weakness, an increase in liver enzymes shown up in blood tests allergic reaction.
Other side effects Tell your doctor, pharmacist or nurse if you notice any of the following side effects: Common: the following may affect up to 1 in 10 people
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
abnormal heart rhythm – shown up on a heart trace (ECG), palpitations, slow or fast heartbeat, high or low blood pressure low blood pressure inflammation of the pancreas (pancreatitis) – this may cause severe stomach pain oxygen supply to the spleen is interrupted (splenic infarction) – this may cause severe stomach pain severe kidney problems – signs include passing more or less urine, that is a different colour than usual high blood levels of creatinine – shown in blood tests cough, hiccups nose bleeds severe sharp chest pain when breathing in (pleurritic pain) swelling of lymph glands (lymphadenopathy) reduced feeling of sensitivity especially on the skin tremor high or low blood sugar levels blurred vision, sensitivity to light hair loss (alopecia) mouth ulcers shivering, feeling generally unwell pain, back or neck pain, pain in arms or legs water retention (oedema) menstrual problems (abnormal vaginal bleeding) inability to sleep (insomnia) being completely or partially unable to talk swelling of the mouth abnormal dreams, or difficulty sleeping problems with co-ordination or balance mucosal inflammation stuffy nose difficulty breathing chest discomfort feeling bloated mild to severe nausea, vomiting, cramps and diarrhoea, usually caused by a virus, stomach pain belching feeling jittery.
Rare: the following may affect up to 1 in 1,000 people
• • • • • • • • • • • • • • • • • •
stroke – signs include pain, weakness, numbness, or tingling in the limbs having a blind or dark spot in your field of vision heart failure or heart attack which could lead to the heart stopping beating and death, heart rhythm problems, with sudden death blood clots in your legs (deep vein thrombosis) – signs include intense pain or swelling of the legs blood clots in your lungs (pulmonary embolism) – signs include feeling short of breath or pain while breathing bleeding into your stomach or gut – signs include vomiting blood or passing blood in your stool a blockage in your gut (intestinal obstruction) especially in the "ileum". The blockage will prevent the contents of your intestine from passing through to the lower bowel signs include feeling bloated, vomiting, severe constipation, loss of appetite, and cramps "haemolytic uraemic syndrome" when red blood cells breakup (haemolysis) which may happen with or without kidney failure "pancytopenia" low level of all blood cells (red and white blood cells and platelets) shown in blood tests large purple discolourations on the skin (thrombotic thrombocytopenic purpura) swelling of the face or tongue depression double vision breast pain adrenal glands not working properly – this may cause weakness, tiredness, loss of appetite, skin discolouration pituitary gland not working properly – this may cause low blood levels of some hormones that affect the function of the male or female sex organs hearing problems pseudoaldosteronism, which results in high blood pressure with a low potassium level (shown in blood tests).
Not known: frequency cannot be estimated from the available data
not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at 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.
Posaconazole
Keep this medicine out of the sight and reach of children. Do not use this medicine after the expiry date which is stated on the label and carton after EXP. The expiry date refers to the last day of that month.
This medicine does not require any special storage conditions. Do not refrigerate or freeze. If you have any suspension left in a bottle more than 30 days after it was first opened, you should not use this medicine. Please return the bottle containing any leftover suspension to your pharmacist. 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.
What Posaconazole contains
Posaconazole 40 mg/ml oral suspension comes as oral solution containing 40mg/ml. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.
The active substance in Posaconazole 40 mg/ml oral suspension is posaconazole.
Medicines with the same active substance, strength and form include: Noxafil 40mg/ml oral suspension, Posaconazole 40 mg/ml Oral Suspension, Posaconazole 40 mg/ml Oral Suspension. In total there are 4 equivalent products. They are interchangeable only if your prescriber or pharmacist says so.
This leaflet reproduces the patient information leaflet approved for Posaconazole 40 mg/ml oral suspension, 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.
Posaconazole oral suspension is indicated for use in the treatment of the following fungal infections in adults (see section 5.1):
- Invasive aspergillosis in patients with disease that is refractory to amphotericin B or itraconazole or in patients who are intolerant of these medicinal products;
- Fusariosis in patients with disease that is refractory to amphotericin B or in patients who are intolerant of amphotericin B;
- Chromoblastomycosis and mycetoma in patients with disease that is refractory to itraconazole or in patients who are intolerant of itraconazole;
- Coccidioidomycosis in patients with disease that is refractory to amphotericin B, itraconazole or fluconazole or in patients who are intolerant of these medicinal products;
- Oropharyngeal candidiasis: as first-line therapy in patients who have severe disease or are immunocompromised, in whom response to topical therapy is expected to be poor.
Refractoriness is defined as progression of infection or failure to improve after a minimum of 7 days of prior therapeutic doses of effective antifungal therapy.
Posaconazole oral suspension is also indicated for prophylaxis of invasive fungal infections in the following patients:
- Patients receiving remission-induction chemotherapy for acute myelogenous leukaemia (AML) or myelodysplastic syndromes (MDS) expected to result in prolonged neutropenia and who are at high risk of developing invasive fungal infections;
Hematopoietic stem cell transplant (HSCT) recipients who are undergoing high- dose immunosuppressive therapy for graft versus host disease and who are at high risk of developing invasive fungal infections.
Non-Interchangeability between different formulations of posaconazole
Posaconazole is available in other forms and strengths, however not under this tradename. The tablet and oral suspension are not to be used interchangeably due to the differences between these two formulations in frequency of dosing, administration with food and plasma drug concentration achieved. Therefore, follow the specific dosage recommendations for each formulation.
Treatment should be initiated by a physician experienced in the management of fungal infections or in the supportive care in the high risk patients for which posaconazole is indicated as prophylaxis.
Posology
Posaconazole is also available as 100 mg gastro-resistant tablet and 300 mg concentrate for solution for infusion. Posaconazole tablets are the preferred formulation to optimize plasma concentrations and generally provide higher plasma drug exposures than posaconazole oral suspension.
Recommended dose is shown in Table 1.
Table 1 Recommended dose according to indication
Indication
Dose and duration of therapy
(See section 5.2)
Refractory invasive fungal infections (IFI)/patients with IFI intolerant to 1st line therapy
200 mg (5 ml) four times a day. Alternatively, patients who can tolerate food or a nutritional supplement may take 400 mg (10 ml) twice a day during or immediately following a meal or nutritional supplement.
Duration of therapy should be based on the severity of the underlying disease, recovery from immunosuppression, and clinical response.
Oropharyngeal candidiasis
Loading dose of 200 mg (5 ml) once a day on the first day, then 100 mg (2.5 ml) once a day for 13 days.
Each dose of Posaconazole should be administered during or immediately after a meal, or a nutritional supplement in patients who cannot tolerate food to enhance the oral absorption and to ensure adequate exposure.
Prophylaxis of invasive fungal infections
200 mg (5 ml) three times a day. Each dose of Posaconazole should be administered during or immediately after a meal, or a nutritional supplement in patients who cannot tolerate food to enhance the oral absorption and to ensure adequate exposure. The duration of therapy is based on recovery from neutropenia or immunosuppression. For patients with acute myelogenous leukaemia or myelodysplastic syndromes, prophylaxis with Posaconazole should start several days before the anticipated onset of neutropenia and continue for 7 days after the neutrophil count rises above 500 cells per mm3.
Special populations
Renal impairment
An effect of renal impairment on the pharmacokinetics of posaconazole is not expected and no dose adjustment is recommended (see section 5.2).
Hepatic impairment
Limited data on the effect of hepatic impairment (including Child-Pugh C classification of chronic liver disease) on the pharmacokinetics of posaconazole demonstrate an increase in plasma exposure compared to subjects with normal hepatic function, but do not suggest that dose adjustment is necessary (see sections 4.4 and 5.2). It is recommended to exercise caution due to the potential for higher plasma exposure.
Paediatric population
The safety and efficacy of posaconazole in children aged below 18 years have not been established. Currently available data are described in sections 5.1 and 5.2, but no recommendation on a posology can be made.
Method of administration
For oral use.
The oral suspension must be shaken well before use (5 – 10 seconds).
Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.
Co-administration with ergot alkaloids (see section 4.5)
Co-administration with the CYP3A4 substrates terfenadine, astemizole, cisapride, pimozide, halofantrine or quinidine since this may result in increased plasma concentrations of these medicinal products, leading to QTc prolongation and rare occurrences of torsades de pointes (see sections 4.4 and 4.5).
Co-administration with the HMG-CoA reductase inhibitors simvastatin, lovastatin and atorvastatin (see section 4.5).
Co-administration during the initiation and dose-titration phase of venetoclax in Chronic Lymphocytic Leukaemia (CLL) patients (see sections 4.4 and 4.5).
Hypersensitivity
There is no information regarding cross-sensitivity between posaconazole and other azole antifungal agents. Caution should be used when prescribing posaconazole to patients with hypersensitivity to other azoles.
Hepatic toxicity
Hepatic reactions (e.g. mild to moderate elevations in ALT, AST, alkaline phosphatase, total bilirubin and/or clinical hepatitis) have been reported during treatment with posaconazole.
Elevated liver function tests were generally reversible on discontinuation of therapy and in some instances these tests normalised without interruption of therapy. Rarely, more severe hepatic reactions with fatal outcomes have been reported.
Posaconazole should be used with caution in patients with hepatic impairment due to limited clinical experience and the possibility that posaconazole plasma levels may be higher in these patients (see sections 4.2 and 5.2).
Monitoring of hepatic function
Liver function tests should be evaluated at the start of and during the course of posaconazole therapy. Patients who develop abnormal liver function tests during posaconazole therapy must be routinely monitored for the development of more severe hepatic injury. Patient management should include laboratory evaluation of hepatic function (particularly liver function tests and bilirubin).
Discontinuation of posaconazole should be considered if clinical signs and symptoms are consistent with development of liver disease.
QTc prolongation
Some azoles have been associated with prolongation of the QTc interval. Posaconazole must not be administered with medicinal products that are substrates for CYP3A4 and are known to prolong the QTc interval (see sections 4.3 and 4.5). Posaconazole should be administered with caution to patients with pro-arrhythmic conditions such as:
• Congenital or acquired QTc prolongation
• Cardiomyopathy, especially in the presence of cardiac failure
• Sinus bradycardia
• Existing symptomatic arrhythmias
• Concomitant use with medicinal products known to prolong the QTc interval (other than those mentioned in section 4.3).
Electrolyte disturbances, especially those involving potassium, magnesium or calcium levels, should be monitored and corrected as necessary before and during posaconazole therapy.
Drug interactions
Posaconazole is an inhibitor of CYP3A4 and should only be used under specific circumstances during treatment with other medicinal products that are metabolised by CYP3A4 (see section 4.5).
Midazolam and other benzodiazepines
Due to the risk of prolonged sedation and possible respiratory depression co- administration of posaconazole with any benzodiazepines metabolised by CYP3A4 (e.g. midazolam, triazolam, alprazolam) should only be considered if clearly necessary. Dose adjustment of benzodiazepines metabolised by CYP3A4 should be considered (see section 4.5).
Vincristine toxicity
Concomitant administration of azole antifungals, including posaconazole, with vincristine has been associated with neurotoxicity and other serious adverse reactions, including seizures, peripheral neuropathy, syndrome of inappropriate antidiuretic hormone secretion, and paralytic ileus. Reserve azole antifungals, including posaconazole, for patients receiving a vinca alkaloid, including vincristine, who have no alternative antifungal treatment options (see section 4.5).
Venetoclax toxicity
Concomitant administration of strong CYP3A inhibitors, including posaconazole, with the CYP3A4 substrate venetoclax, may increase venetoclax toxicities, including the risk of tumour lysis syndrome (TLS) and neutropenia (see sections 4.3 and 4.5). Refer to the venetoclax SmPC for detailed guidance.
Rifamycin antibacterials (rifampicin, rifabutin), flucloxacillin, certain anticonvulsants (phenytoin, carbamazepine, phenobarbital, primidone), efavirenz and cimetidine
Posaconazole concentrations may be significantly lowered in combination; therefore, concomitant use with posaconazole should be avoided unless the benefit to the patient outweighs the risk (see section 4.5).
Gastrointestinal dysfunction
There are limited pharmacokinetic data in patients with severe gastrointestinal dysfunction (such as severe diarrhoea). Patients who have severe diarrhoea or vomiting should be monitored closely for breakthrough fungal infections.
Photosensitivity reaction
Posaconazole may cause increased risk of photosensitivity reaction. Patients should be advised to avoid sun exposure during treatment without adequate protection such as protective clothing and sunscreen with a high sun protection factor (SPF).
Excipients
This medicinal product contains approximately 2.11 g of glucose per 5 ml of suspension. Patients with glucose-galactose malabsorption should not take this medicine. May be harmful to the teeth.
This medicinal product contains less than 1 mmol sodium (23 mg) per 5 ml of suspension, that is to say essentially 'sodium-free'.
This medicinal product contains 2 mg benzoate salt in each ml which is equivalent to 10 mg/5 ml. Benzoate salt may increase jaundice (yellowing of the skin and eyes) in newborn babies (up to 4 weeks old).
Effects of other medicinal products on posaconazole
Posaconazole is metabolised via UDP glucuronidation (phase 2 enzymes) and is a substrate for p-glycoprotein (P-gp) efflux in vitro. Therefore, inhibitors (e.g. verapamil, ciclosporin, quinidine, clarithromycin, erythromycin, etc.) or inducers (e.g. rifampicin, rifabutin, certain anticonvulsants, etc.) of these clearance pathways may increase or decrease posaconazole plasma concentrations, respectively.
Rifabutin
Rifabutin (300 mg once a day) decreased the Cmax (maximum plasma concentration) and AUC (area under the plasma concentration time curve) of posaconazole to 57 % and 51 %, respectively.
Concomitant use of posaconazole and rifabutin and similar inducers (e.g. rifampicin) should be avoided unless the benefit to the patient outweighs the risk. See also below regarding the effect of posaconazole on rifabutin plasma levels.
Efavirenz
Efavirenz (400 mg once a day) decreased the Cmax and AUC of posaconazole by 45% and 50%, respectively. Concomitant use of posaconazole and efavirenz should be avoided unless the benefit to the patient outweighs the risk.
Flucloxacillin
Flucloxacillin (a CYP450 inducer) may decrease plasma posaconazole concentrations. Concomitant use of posaconazole and flucloxacillin should be avoided unless the benefit to the patient outweighs the risk (see section 4.4).
Fosamprenavir
Combining fosamprenavir with posaconazole may lead to decreased posaconazole plasma concentrations. If concomitant administration is required, close monitoring for breakthrough fungal infections is recommended. Repeat dose administration of fosamprenavir (700 mg twice daily x 10 days) decreased the Cmax and AUC of posaconazole oral suspension (200 mg once daily on the 1st day, 200 mg twice daily on the 2nd day, then 400 mg twice daily x 8 Days) by 21 % and 23 %, respectively.
The effect of posaconazole on fosamprenavir levels when fosamprenavir is given with ritonavir is unknown.
Phenytoin
Phenytoin (200 mg once a day) decreased the Cmax and AUC of posaconazole by 41% and 50%, respectively. Concomitant use of posaconazole and phenytoin and similar inducers (e.g. carbamazepine, phenobarbital, primidone) should be avoided unless the benefit to the patient outweighs the risk.
H2 receptor antagonists and proton pump inhibitors
Posaconazole plasma concentrations (Cmax and AUC) were reduced by 39 % when posaconazole was administered with cimetidine (400 mg twice a day) due to reduced absorption possibly secondary to a decrease in gastric acid production. Co- administration of posaconazole with H2 receptor antagonists should be avoided if possible.
Similarly, administration of 400 mg posaconazole with esomeprazole (40 mg daily) decreased mean Cmax and AUC by 46 % and 32 %, respectively, compared to dosing with 400 mg posaconazole alone.
Co-administration of posaconazole with proton pump inhibitors should be avoided if possible.
Food
The absorption of posaconazole is significantly increased by food (see sections 4.2 and 5.2).
Effects of posaconazole on other medicinal products
Posaconazole is a potent inhibitor of CYP3A4. Co-administration of posaconazole with CYP3A4 substrates may result in large increases in exposure to CYP3A4 substrates as exemplified by the effects on tacrolimus, sirolimus, atazanavir and midazolam below. Caution is advised during co-administration of posaconazole with CYP3A4 substrates administered intravenously and the dose of the CYP3A4 substrate may need to be reduced. If posaconazole is used concomitantly with CYP3A4 substrates that are administered orally, and for which an increase in plasma concentrations may be associated with unacceptable adverse reactions, plasma concentrations of the CYP3A4 substrate and/or adverse reactions should be closely monitored and the dose adjusted as needed. Several of the interaction studies were conducted in healthy volunteers in whom a higher exposure to posaconazole occurs compared to patients administered the same dose. The effect of posaconazole on CYP3A4 substrates in patients might be somewhat lower than that observed in healthy volunteers, and is expected to be variable between patients due to the variable posaconazole exposure in patients. The effect of co- administration with posaconazole on plasma levels of CYP3A4 substrates may also be variable within a patient, unless posaconazole is administered in a strictly standardised way with food, given the large food effect on posaconazole exposure (see section 5.2).
Terfenadine, astemizole, cisapride, pimozide, halofantrine and quinidine (CYP3A4 substrates)
Co-administration of posaconazole and terfenadine, astemizole, cisapride, pimozide, halofantrine or quinidine is contraindicated. Co-administration may result in increased plasma concentrations of these medicinal products, leading to QTc prolongation and rare occurrences of torsades de pointes (see section 4.3).
Ergot alkaloids
Posaconazole may increase the plasma concentration of ergot alkaloids (ergotamine and dihydroergotamine), which may lead to ergotism. Co-administration of posaconazole and ergot alkaloids is contraindicated (see section 4.3).
HMG-CoA reductase inhibitors metabolised through CYP3A4 (e.g. simvastatin, lovastatin, and atorvastatin)
Posaconazole may substantially increase plasma levels of HMG-CoA reductase inhibitors that are metabolised by CYP3A4. Treatment with these HMG-CoA reductase inhibitors should be discontinued during treatment with posaconazole as increased levels have been associated with rhabdomyolysis (see section 4.3).
Vinca alkaloids
Most of the vinca alkaloids (e.g., vincristine and vinblastine) are substrates of CYP3A4. Concomitant administration of azole antifungals, including posaconazole, with vincristine has been associated with serious adverse reactions (see section 4.4). Posaconazole may increase the plasma concentrations of vinca alkaloids which may lead to neurotoxicity and other serious adverse reactions. Therefore, reserve azole antifungals, including posaconazole, for patients receiving a vinca alkaloid, including vincristine, who have no alternative antifungal treatment options.
Rifabutin
Posaconazole increased the Cmax and AUC of rifabutin by 31% and 72%, respectively.
Concomitant use of posaconazole and rifabutin should be avoided unless the benefit to the patient outweighs the risk (see also above regarding the effect of rifabutin on plasma levels of posaconazole). If these medicinal products are co-administered, careful monitoring of full blood counts and adverse reactions related to increased rifabutin levels (e.g. uveitis) is recommended.
Sirolimus
Repeat dose administration of posaconazole oral suspension (400 mg twice daily for 16 days) increased the Cmax and AUC of sirolimus (2 mg single dose) an average of 6.7-fold and 8.9- fold (range 3.1 to 17.5-fold), respectively, in healthy subjects. The effect of posaconazole on sirolimus in patients is unknown, but is expected to be variable due to the variable posaconazole exposure in patients. Co-administration of posaconazole with sirolimus is not recommended and should be avoided whenever possible. If it is considered that co-administration is unavoidable, then it is recommended that the dose of sirolimus should be greatly reduced at the time of initiation of posaconazole therapy and that there should be very frequent monitoring of trough concentrations of sirolimus in whole blood.
Sirolimus concentrations should be measured upon initiation, during co- administration, and at discontinuation of posaconazole treatment, with sirolimus doses adjusted accordingly. It should be noted that the relationship between sirolimus trough concentration and AUC is changed during co-administration with posaconazole. As a result, sirolimus trough concentrations that fall within the usual therapeutic range may result in sub-therapeutic levels. Therefore trough concentrations that fall in the upper part of the usual therapeutic range should be targeted and careful attention should be paid to clinical signs and symptoms, laboratory parameters and tissue biopsies.
Ciclosporin
In heart transplant patients on stable doses of ciclosporin, posaconazole oral suspension 200 mg once daily increased ciclosporin concentrations requiring dose reductions. Cases of elevated ciclosporin levels resulting in serious adverse reactions, including nephrotoxicity and one fatal case of leukoencephalopathy, were reported in clinical efficacy studies. When initiating treatment with posaconazole in patients already receiving ciclosporin, the dose of ciclosporin should be reduced (e.g. to about three quarters of the current dose). Thereafter blood levels of ciclosporin should be monitored carefully during co-administration, and upon discontinuation of posaconazole treatment, and the dose of ciclosporin should be adjusted as necessary.
Tacrolimus
Posaconazole increased Cmax and AUC of tacrolimus (0.05 mg/kg body weight single dose) by 121% and 358%, respectively. Clinically significant interactions resulting in hospitalisation and/or posaconazole discontinuation were reported in clinical efficacy studies. When initiating posaconazole treatment in patients already receiving tacrolimus, the dose of tacrolimus should be reduced (e.g. to about one third of the current dose). Thereafter blood levels of tacrolimus should be monitored carefully during co-administration, and upon discontinuation of posaconazole, and the dose of tacrolimus should be adjusted as necessary.
HIV Protease inhibitors
As HIV protease inhibitors are CYP3A4 substrates, it is expected that posaconazole will increase plasma levels of these antiretroviral agents. Following co-administration of posaconazole oral suspension (400 mg twice daily) with atazanavir (300 mg once daily) for 7 days in healthy subjects Cmax and AUC of atazanavir increased by an average of 2.6-fold and 3.7-fold (range 1.2 to 26-fold), respectively. Following co- administration of posaconazole oral suspension (400 mg twice daily) with atazanavir and ritonavir (300/100 mg once daily) for 7 days in healthy subjects Cmax and AUC of atazanavir increased by an average of 1.5-fold and 2.5-fold (range 0.9 to 4.1-fold), respectively. The addition of posaconazole to therapy with atazanavir or with atazanavir plus ritonavir was associated with increases in plasma bilirubin levels.
Frequent monitoring for adverse reactions and toxicity related to antiretroviral agents that are substrates of CYP3A4 is recommended during co-administration with posaconazole.
Midazolam and other benzodiazepines metabolised by CYP3A4
In a study in healthy volunteers posaconazole oral suspension (200 mg once daily for 10 days) increased the exposure (AUC) of intravenous midazolam (0.05 mg/kg) by 83%. In another study in healthy volunteers, repeat dose administration of posaconazole oral suspension (200 mg twice daily for 7 days) increased the Cmax and AUC of intravenous midazolam (0.4 mg single dose) by an average of 1.3- and 4.6- fold (range 1.7 to 6.4-fold), respectively; Posaconazole oral suspension 400 mg twice daily for 7 days increased the intravenous midazolam Cmax and AUC by 1.6 and 6.2- fold (range 1.6 to 7.6-fold), respectively. Both doses of posaconazole increased Cmax and AUC of oral midazolam (2 mg single oral dose) by 2.2 and 4.5-fold, respectively.
In addition, posaconazole oral suspension (200 mg or 400 mg) prolonged the mean terminal half-life of midazolam from approximately 3-4 hours to 8-10 hours during co-administration.
Due to the risk of prolonged sedation it is recommended that dose adjustments should be considered when posaconazole is administered concomitantly with any benzodiazepine that is metabolised by CYP3A4 (e.g. midazolam, triazolam, alprazolam) (see section 4.4).
Calcium channel blockers metabolised through CYP3A4 (e.g. diltiazem, verapamil, nifedipine, nisoldipine)
Frequent monitoring for adverse reactions and toxicity related to calcium channel blockers is recommended during co-administration with posaconazole. Dose adjustment of calcium channel blockers may be required.
Digoxin
Administration of other azoles has been associated with increases in digoxin levels. Therefore, posaconazole may increase plasma concentration of digoxin and digoxin levels need to be monitored when initiating or discontinuing posaconazole treatment.
Sulfonylureas
Glucose concentrations decreased in some healthy volunteers when glipizide was co- administered with posaconazole. Monitoring of glucose concentrations is recommended in diabetic patients.
All-trans retinoic acid (ATRA) or tretinoin
As ATRA is metabolised by the hepatic CYP450 enzymes, notably CYP3A4, concomitant administration with posaconazole, which is a strong inhibitor of CYP3A4, may lead to increased exposure to tretinoin resulting in an increased toxicity (especially hypercalcaemia). Serum calcium levels should be monitored and, if needed, appropriate dose adjustments of tretinoin should be considered during the treatment with posaconazole, and during the following days after treatment.
Venetoclax
Compared with venetoclax 400 mg administered alone, co-administration of 300 mg posaconazole, a strong CYP3A inhibitor, with venetoclax 50 mg and 100 mg for 7 days in 12 patients, increased venetoclax C max to 1.6-fold and 1.9-fold, and AUC to 1.9-fold and 2.4-fold, respectively (see sections 4.3 and 4.4).
Refer to the venetoclax SmPC.
Paediatric population
Interaction studies have only been performed in adults.
Pregnancy
There is insufficient information on the use of posaconazole in pregnant women. Studies in animals have shown reproductive toxicity (see section 5.3). The potential risk for humans is unknown.
Women of childbearing potential have to use effective contraception during treatment. Posaconazole must not be used during pregnancy unless the benefit to the mother clearly outweighs the potential risk to the foetus.
Breast-feeding
Posaconazole is excreted into the milk of lactating rats (see section 5.3). The excretion of posaconazole in human breast milk has not been investigated. Breast- feeding must be stopped on initiation of treatment with posaconazole.
Fertility
Posaconazole had no effect on fertility of male rats at doses up to 180 mg/kg (1.7 times the 400- mg twice daily regimen based on steady-state plasma concentrations in healthy volunteers) or female rats at a dose up to 45 mg/kg (2.2 times the 400-mg twice daily regimen). There is no clinical experience assessing the impact of posaconazole on fertility in humans.
Since certain adverse reactions (e.g. dizziness, somnolence, etc.) have been reported with posaconazole use, which potentially may affect driving/operating machinery, caution needs to be used.
Summary of the safety profile
The safety of posaconazole oral suspension has been assessed in > 2,400 patients and healthy volunteers enrolled in clinical studies and from post-marketing experience. The most frequently reported serious related adverse reactions included nausea, vomiting, diarrhoea, pyrexia, and increased bilirubin.
The safety of posaconazole tablet has been assessed in 336 patients and healthy volunteers enrolled in clinical trials. The safety profile of tablets was similar to that of the oral suspension.
Tabulated list of adverse reactions
Within the organ system classes, adverse reactions are listed under headings of frequency using the following categories: very common (≥1/10); common (≥1/100 to <1/10); uncommon (≥1/1,000 to <1/100); rare (≥ 1/10,000 to <1/1,000); very rare (<1/10,000); not known (cannot be estimated from the available data).
Table 2 Adverse reactions by body system and frequency reported in clinical studies and/or post- marketing use*
System Organ Class
Frequency
Preferred Term
Blood and lymphatic system disorders
Common
Neutropenia
Uncommon
Thrombocytopenia, leukopenia, anaemia, eosinophilia, lymphadenopathy, splenic infarction
Rare
Haemolytic uraemic syndrome, thrombotic thrombocytopenic purpura, pancytopenia, coagulopathy, haemorrhage
Immune system disorders
Uncommon
Allergic reaction
Rare
Hypersensitivity reaction
Endocrine disorders
Rare
Adrenal insufficiency, blood gonadotropin decreased, pseudoaldosteronism
Metabolism and nutrition disorders
Common
Electrolyte imbalance, anorexia, decreased appetite, hypokalaemia, hypomagnesaemia
Uncommon
Hyperglycaemia, hypoglycaemia
Psychiatric disorders
Uncommon
Abnormal dreams, confusional state, sleep disorder
Rare
Psychotic disorder, depression
Nervous system disorders
Common
Paraesthesia, dizziness, somnolence, headache, dysgeusia
Uncommon
Convulsions, neuropathy, hypoaesthesia, tremor, aphasia, insomnia
Rare
Cerebrovascular accident, encephalopathy, peripheral neuropathy, syncope
Eye disorders
Uncommon
Blurred vision, photophobia, visual acuity reduced
Rare
Diplopia, scotoma
Ear and labyrinth disorders
Rare
Hearing impairment
Cardiac disorders
Uncommon
Long QT syndrome§, electrocardiogram abnormal§, palpitations, bradycardia, supraventricular extrasystoles, tachycardia
Rare
Torsade de Pointes, sudden death, ventricular tachycardia, cardio-respiratory arrest, cardiac failure, myocardial infarction
Vascular disorders
Common
Hypertension
Uncommon
Hypotension, vasculitis
Rare
Pulmonary embolism, deep vein thrombosis
Respiratory, thoracic and mediastinal disorders
Uncommon
Cough, epistaxis, hiccups, nasal congestion, pleuritic pain, tachypnoea
Rare
Pulmonary hypertension, interstitial pneumonia, pneumonitis
Gastrointestinal disorders
Very Common
Nausea
Common
Vomiting, abdominal pain, diarrhoea, dyspepsia, dry mouth, flatulence, constipation, anorectal discomfort
Uncommon
Pancreatitis, abdominal distension, enteritis, epigastric discomfort, eructation, gastrooesophageal reflux disease, oedema mouth
Rare
Gastrointestinal haemorrhage, ileus
Hepatobiliary disorders
Common
Liver function tests raised (ALT increased, AST increased, bilirubin increased, alkaline phosphatase increased, GGT increased)
Uncommon
Hepatocellular damage, hepatitis, jaundice, hepatomegaly, cholestasis, hepatic toxicity, hepatic function abnormal
Rare
Hepatic failure, hepatitis cholestatic, hepatosplenomegaly, liver tenderness, asterixis
Skin and subcutaneous tissue disorders
Common
Rash, pruritis
Uncommon
Mouth ulceration, alopecia, dermatitis, erythema, petechiae
Rare
Stevens Johnson syndrome, vesicular rash
Not known
Photosensitivity reaction§
Musculoskeletal, connective tissue and bone disorders
Uncommon
Back pain, neck pain, musculoskeletal pain, pain in extremity
Renal and urinary disorders
Uncommon
Acute renal failure, renal failure, blood creatinine increased
Rare
Renal tubular acidosis, interstitial nephritis
Reproductive system and breast disorders
Uncommon
Menstrual disorder
Rare
Breast pain
General disorders and administration site conditions
Common
Pyrexia (fever), asthenia, fatigue
Uncommon
Oedema, pain, chills, malaise, chest discomfort, drug intolerance, feeling jittery, mucosal inflammation
Rare
Tongue oedema, face oedema
Investigations
Uncommon
Altered medicine levels, blood phosphorus decreased, chest x-ray abnormal
* Based on adverse reactions observed with the oral suspension, gastro-resistant tablets, and concentrate for solution for infusion.
§ See section 4.4.
Description of selected adverse reactions
Hepatobiliary disorders
During post-marketing surveillance of posaconazole oral suspension, severe hepatic injury with fatal outcome has been reported (see section 4.4).
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 at www.mhra.gov.uk/yellowcard or search for 'MHRA Yellow Card' in the Google Play or Apple App Store.
During clinical trials, patients who received posaconazole oral suspension doses up to 1,600 mg/day experienced no different adverse reactions from those reported with patients at the lower doses.
Accidental overdose was noted in one patient who took posaconazole oral suspension 1,200 mg twice a day for 3 days. No adverse reactions were noted by the investigator.
Posaconazole is not removed by haemodialysis. There is no special treatment available in the case of overdose with posaconazole. Supportive care may be considered.
Ask anything about Posaconazole 40 mg/ml oral suspension. 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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