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.
e Posaconazole can increase the amount of these posaconazole medicines in the blood which may lead to very 3. How to take posaconazole serious changes to your heart rhythm: 4. Possible side effects
POSACONAZOLE cancer). You should avoid sun exposure while being treated. It is important to cover sun exposed areas of skin Always take this medicine exactly as your doctor with protective clothing and use sunscreen with a or pharmacist has told you. Check with your high sun protection factor (SPF), as an increased doctor or pharmacist if you are not sure. Do not sensitivity of skin to the sun's UV rays can occur. switch between posaconazole gastro-resistant tablets and posaconazole oral suspension without If any of the above apply to you (or you are not talking to your doctor or pharmacist because it sure), talk to your doctor, pharmacist or nurse may result in a lack of efficacy or an increased before taking posaconazole. risk of adverse reactions. If you develop severe diarrhoea or vomiting How much to take (being sick) while taking posaconazole, talk to The usual dose is 300 mg posaconazole (three your doctor, pharmacist or nurse straight away, 100 mg gastro-resistant tablets) twice a day on as this may stop it from working properly. See the first day, then 300 mg posaconazole (three 100 section 4 for more information. mg gastro-resistant tablets) once a day, thereafter.
The length of treatment may 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 regimen. Taking this medicine
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.
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 blister / bottle and the outer 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 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.
What Posaconazole contains The active substance is posaconazole. Each gastro-resistant tablet contains 100 mg of posaconazole. The other ingredients are: Methacrylic acid-ethyl acrylate copolymer (1:1) (Type B), triethyl citrate, xylitol, hydroxypropylcellulose, propyl gallate, microcrystalline cellulose, anhydrous colloidal silica, croscarmellose sodium, sodium stearyl fumarate, polyvinyl alcohol, titanium dioxide (E171), macrogol 3350, talc, iron oxide yellow (E172). What Posaconazole looks like and contents of the pack Posaconazole Zentiva gastro-resistant tablets are yellow coated and capsule shaped, debossed with "100P" on one side and plain on the other side. The tablets are packaged in cartons of 24, 48 or 96 tablets in non-perforated blisters, 24 x 1, 48 x 1 or 96 x 1 tablets in perforated unit dose blisters or 60 tablets in HDPE bottles. Not all pack sizes may be marketed. Marketing Authorisation Holder and Manufacturer Marketing Authorisation Holder Zentiva Pharma UK limited, 12 New Fetter Lane, London EC4A 1JP, United Kingdom. Manufacturer Delorbis Pharmaceuticals Ltd, 17 Athinon street, Ergates Industrial Area, 2643 Ergates, P.O.Box 28629, 2081, Cyprus This leaflet was last revised in May 2026
1065049515
Posaconazole Zentiva 100 mg gastro-resistant tablets comes as tablet containing 100mg. 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 Zentiva 100 mg gastro-resistant tablets is posaconazole.
Medicines with the same active substance, strength and form include: Noxafil 100 mg Gastro-resistant Tablets, Posaconazole 100 mg Gastro-resistant tablets, Posaconazole 100 mg gastro-resistant tablets. In total there are 6 equivalent products. They are interchangeable only if your prescriber or pharmacist says so.
This leaflet reproduces the patient information leaflet approved for Posaconazole Zentiva 100 mg gastro-resistant tablets, 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 Zentiva gastro-resistant tablets are indicated for use in the treatment of the following fungal infections in adults (see sections 4.2 and 5.1):
• Invasive aspergillosis.
Posaconazole Zentiva gastro-resistant tablets are indicated for use in the treatment of the following fungal infections in paediatric patients from 2 years of age weighing more than 40 kg and adults (see sections 4.2 and 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.
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 Zentiva gastro-resistant tablets are also indicated for prophylaxis of invasive fungal infections in the following paediatric patients from 2 years of age weighing more than 40 kg and adults (see sections 4.2 and 5.1):
• 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.
Please refer to the Summary of Product Characteristics of posaconazole oral suspension products for use in oropharyngeal candidiasis.
Treatment should be initiated by a physician experienced in the management of fungal infections or in the supportive care of high risk patients for which posaconazole is indicated as prophylaxis.
Non-interchangeability between posaconazole tablets and posaconazole oral suspension
The tablet is not to be used interchangeably with the oral suspension due to the differences between these two formulations in frequency of dosing, administration with food and plasma drug concentration achieved. Therefore, follow the specific dose recommendations for each formulation.
Posology
Posaconazole is also available as 40 mg/mL oral suspension, 300 mg concentrate for solution for infusion and 300 mg gastro-resistant powder and solvent for oral suspension. Posaconazole tablets generally provide higher plasma drug exposures than posaconazole oral suspension under both fed and fasted conditions. Therefore, the tablets are the preferred formulation to optimise plasma concentrations.
Recommended dose in paediatric patients from 2 years of age weighing more than 40 kg and in adults is shown in Table 1.
Posaconazole gastro-resistant powder and solvent for oral suspension is recommended for oral use in paediatric patients 2 years of age and older weighing 40 kg or less. Refer to the gastro-resistant powder and solvent for oral suspension SmPC for additional dosing information.
Table 1. Recommended dose in paediatric patients from 2 years of age weighing more than 40 kg and in adults according to indication
Indication
Dose and duration of therapy
(See section 5.2)
Treatment of invasive aspergillosis (only for adults)
Loading dose of 300 mg (three 100 mg tablets or 300 mg concentrate for solution for infusion) twice a day on the first day, then 300 mg (three 100 mg tablets or 300 mg concentrate for solution for infusion) once a day thereafter.
Each tablet dose may be taken without regard to food intake.
Recommended total duration of therapy is 6-12 weeks.
Switching between intravenous and oral administration is appropriate when clinically indicated.
Refractory invasive fungal infections (IFI)/patients with IFI intolerant to 1st line therapy.
Loading dose of 300 mg (three 100 mg tablets) twice a day on the first day, then 300 mg (three 100 mg tablets) once a day thereafter. Each dose may be taken without regard to food intake. Duration of therapy should be based on the severity of the underlying disease, recovery from immunosuppression, and clinical response.
Prophylaxis of invasive fungal infections.
Loading dose of 300 mg (three 100 mg tablets) twice a day on the first day, then 300 mg (three 100 mg tablets) once a day thereafter. Each dose may be taken without regard to food intake. 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 2 years have not been established.
No clinical data are available.
Method of administration
For oral use.
The gastro-resistant tablets may be taken with or without food (see section 5.2). The tablets should be swallowed whole with water and should not be crushed, chewed or broken.
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), and efavirenz.
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).
Plasma exposure
Posaconazole plasma concentrations following administration of posaconazole tablets are generally higher than those obtained with posaconazole oral suspension. Posaconazole plasma concentrations following administration of posaconazole tablets may increase over time in some patients (see section 5.2).
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).
Posaconazole Zentiva contains sodium:
This medicinal product contains less than 1 mmol sodium (23 mg) per tablet, that is to say essentially 'sodium-free'.
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.
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).
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.
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
No clinically relevant effects were observed when posaconazole tablets are concomitantly used with antacids, H2-receptor antagonists and proton pump inhibitors. No dose adjustment of posaconazole tablets is required when posaconazole tablets are concomitantly used with antacids, H2-receptor antagonists and proton pump inhibitors.
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.
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 Cmax 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 (3.4 times the 300-mg tablet based on steady-state plasma concentrations in patients) or female rats at a dose up to 45 mg/kg (2.6 times the 300-mg tablet based on steady-state plasma concentrations in patients). 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
Safety data mainly derive from studies with the oral suspension.
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.
Posaconazole tablets
The safety of posaconazole tablet has been assessed in 104 healthy volunteers and 230 patients enrolled in a clinical study of antifungal prophylaxis.
The safety of posaconazole concentrate for solution for infusion and posaconazole tablet has been assessed in 288 patients enrolled in a clinical study of aspergillosis of whom 161 patients received the concentrate for solution for infusion and 127 patients received the tablet formulation.
The tablet formulation was investigated in AML and MDS patients and those after HSCT with or at risk for Graft versus Host Disease (GvHD) only. Maximum duration of exposure to the tablet formulation was shorter than with the oral suspension. Plasma exposure resulting from the tablet formulation was higher than observed with the oral suspension.
The safety of posaconazole tablets has been assessed in 230 patients enrolled in the pivotal clinical study. Patients were enrolled in a non-comparative pharmacokinetic and safety study of posaconazole tablets when given as antifungal prophylaxis. Patients were immunocompromised with underlying conditions including haematological malignancy, neutropenia post-chemotherapy, GVHD, and post HSCT. Posaconazole therapy was given for a median duration of 28 days. Twenty patients received 200 mg daily dose and 210 patients received 300 mg daily dose (following twice daily dosing on Day 1 in each cohort).
The safety of posaconazole tablets and concentrate for solution for infusion were also investigated in a controlled study of treatment of invasive aspergillosis. The maximum duration of invasive aspergillosis treatment was similar to that studied with the oral suspension for salvage treatment and was longer than that with the tablets or concentrate for solution for infusion in prophylaxis.
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*
Blood and lymphatic system disorders
Common:
Uncommon:
Rare:
neutropenia
thrombocytopenia, leukopenia, anaemia, eosinophilia, lymphadenopathy, splenic infarction
haemolytic uraemic syndrome, thrombotic thrombocytopenic purpura, pancytopenia, coagulopathy, haemorrhage
Immune system disorders
Uncommon:
Rare:
allergic reaction
hypersensitivity reaction
Endocrine disorders
Rare:
adrenal insufficiency, blood gonadotropin decreased, pseudoaldosteronism
Metabolism and nutrition disorders
Common:
Uncommon:
electrolyte imbalance, anorexia, decreased appetite, hypokalaemia, hypomagnesaemia
hyperglycaemia, hypoglycaemia
Psychiatric disorders
Uncommon:
Rare:
abnormal dreams, confusional state, sleep disorder
psychotic disorder, depression
Nervous system disorders
Common:
Uncommon:
Rare:
paraesthesia, dizziness, somnolence, headache, dysgeusia
convulsions, neuropathy, hypoaesthesia, tremor, aphasia, insomnia
cerebrovascular accident, encephalopathy, peripheral neuropathy, syncope
Eye disorders
Uncommon:
Rare:
blurred vision, photophobia, visual acuity reduced
diplopia, scotoma
Ear and labyrinth disorders
Rare:
hearing impairment
Cardiac disorders
Uncommon:
Rare:
long QT syndrome§, electrocardiogram abnormal§, palpitations, bradycardia, supraventricular extrasystoles, tachycardia
torsade de pointes, sudden death, ventricular tachycardia, cardio-respiratory arrest, cardiac failure, myocardial infarction
Vascular disorders
Common:
Uncommon:
Rare:
hypertension
hypotension, vasculitis
pulmonary embolism, deep vein thrombosis
Respiratory, thoracic and mediastinal disorders
Uncommon:
Rare:
cough, epistaxis, hiccups, nasal congestion, pleuritic pain, tachypnoea
pulmonary hypertension, interstitial pneumonia, pneumonitis
Gastrointestinal disorders
Very common:
Common:
Uncommon:
Rare:
nausea
vomiting, abdominal pain, diarrhoea, dyspepsia, dry mouth, flatulence, constipation, anorectal discomfort
pancreatitis, abdominal distension, enteritis, epigastric discomfort, eructation, gastroesophageal reflux disease, oedema mouth
gastrointestinal haemorrhage, ileus
Hepatobiliary disorders
Common:
Uncommon:
Rare:
liver function tests raised (ALT increased, AST increased, bilirubin increased, alkaline phosphatase increased, GGT increased)
hepatocellular damage, hepatitis, jaundice, hepatomegaly, cholestasis, hepatic toxicity, hepatic function abnormal
hepatic failure, hepatitis cholestatic, hepatosplenomegaly, liver tenderness, asterixis
Skin and subcutaneous tissue disorders
Common:
Uncommon:
Rare:
Not known:
rash, pruritus
mouth ulceration, alopecia, dermatitis, erythema, petechiae
Stevens-Johnson syndrome, vesicular rash
photosensitivity reaction§
Musculoskeletal and connective tissue disorders
Uncommon:
back pain, neck pain, musculoskeletal pain, pain in extremity
Renal and urinary disorders
Uncommon:
Rare:
acute renal failure, renal failure, blood creatinine increased
renal tubular acidosis, interstitial nephritis
Reproductive system and breast disorders
Uncommon:
Rare:
menstrual disorder
breast pain
General disorders and administration site conditions
Common:
Uncommon:
Rare:
pyrexia (fever), asthenia, fatigue
oedema, pain, chills, malaise, chest discomfort, drug intolerance, feeling jittery, mucosal inflammation
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, concentrate for solution for infusion , and gastro-resistant powder and solvent for oral suspension.
§ 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.
There is no experience with overdose of posaconazole tablets.
During clinical studies, 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 Zentiva 100 mg gastro-resistant tablets. 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.
We use essential cookies to make the site work. We would also like to set optional cookies to understand how the site is used, so we can improve it. We will not set optional cookies unless you accept. See our cookie policy and privacy policy.