Posaconazole
About Posaconazole
Posaconazole is an antifungal medicine used to prevent and treat certain fungal infections. It is often prescribed to people with weakened immune systems who are at a higher risk of developing invasive fungal infections. Posaconazole works by stopping fungi from growing and spreading, helping the body control the infection.
Take Posaconazole exactly as prescribed and at the same time each day. Food instructions may vary depending on the formulation, so follow the directions provided with your medicine. Swallow the medicine as directed and complete the full course, even if you start to feel better. Do not stop treatment without consulting your doctor, as the infection may return or become more difficult to treat.
Some people may experience nausea, vomiting, diarrhoea, stomach discomfort, or headache. These side effects are usually mild. Contact your doctor if they become severe, persistent, or difficult to manage. Consult your doctor right away if you develop yellowing of the skin or eyes, dark urine, a fast or irregular heartbeat, or signs of a severe allergic reaction.
Before starting Posaconazole, tell your doctor if you have liver disease, kidney problems, heart failure, heart rhythm problems, or low levels of potassium, magnesium, or calcium in your blood. Do not take this medicine if you are allergic to posaconazole or any of its ingredients. Some medicines must not be taken with posaconazole, including ergot medicines, sirolimus, certain cholesterol-lowering medicines, and some medicines that can cause dangerous changes in heart rhythm. Give your doctor a complete list of all medicines and supplements you take.
Your doctor may perform blood tests during treatment to monitor your liver function and, when needed, check the amount of posaconazole in your blood. If you are pregnant, planning a pregnancy, breastfeeding, an older adult, or considering this medicine for a child, consult your doctor before use. Your doctor will consider factors such as age, weight, kidney and liver function, other medicines, and individual treatment needs before recommending the most appropriate dose and formulation.
Uses of Posaconazole
Medicinal Benefits
When used as prescribed, Posaconazole may provide the following benefits:
- Helps protect people at high risk: Reduces the risk of invasive fungal infections in people whose immune systems are severely weakened.
- Helps control difficult fungal infections: Stops fungi from growing and spreading, giving the body a better chance to fight the infection.
- Supports recovery: Treating or preventing fungal infections may help reduce infection-related symptoms and support recovery during treatment for other health conditions.
- Helps prevent complications: Early and effective control of fungal infections may reduce the risk of the infection spreading to other parts of the body.
Directions for Use
- Posaconazole should be taken with food, preferably a high-fat meal, to ensure proper absorption.
- It is recommended to take Posaconazole twice on the first day, then once daily afterward, or as advised by your doctor.
- Swallow Posaconazole as a whole with a glass of water.
- Do not crush, chew, or break it.
Storage
Side Effects of Posaconazole
Common Side Effects (Usually mild)
- Nausea or vomiting
- Diarrhoea
- Stomach pain or discomfort
- Headache
- Dizziness or tiredness
Serious Side Effects (Consult your doctor right away)
- Yellowing of the skin or eyes, dark urine, pale stools, or severe pain in the upper abdomen, which may be signs of liver problems
- Fast, pounding, or irregular heartbeat, severe dizziness, or fainting
- Severe or persistent nausea, vomiting, or diarrhoea
- Unusual muscle weakness, muscle cramps, tingling, or numbness, which may be related to changes in mineral levels in the blood
- Signs of a severe allergic reaction, such as hives, swelling of the face, lips, tongue, or throat, or difficulty breathing
Medicines Containing this Salt
View AllDrug Warnings
- Complete the full course: Continue taking Posaconazole for the full duration prescribed by your doctor, even if you start to feel better. Stopping treatment early may allow the fungal infection to return or become more difficult to treat.
- Attend regular liver checks: Your doctor may order blood tests to monitor your liver function during treatment.
- Attend blood level tests if advised: Your doctor may sometimes measure the amount of posaconazole in your blood to check that you are receiving enough medicine and reduce the risk of treatment failure or side effects.
- Report changes in your heartbeat: Consult your doctor right away if you experience a fast, pounding, fluttering, or irregular heartbeat.
- Share your complete medicine list: Tell your doctor about all prescription medicines, over-the-counter medicines, vitamins, and supplements you take, as posaconazole can interact with several medicines.
- Tell your doctor about kidney problems: Inform your doctor if you have kidney problems. Your doctor will consider your kidney function and the formulation being used when planning your treatment.
- Use in children only as prescribed: Posaconazole may be used in certain children, but the suitable formulation and dose depend on factors such as age, weight, and the condition being treated. Give Posaconazole to a child only under medical supervision.
- Ask about other formulations if you cannot take oral medicine: Posaconazole is also available as an intravenous (IV) infusion, which may be given in a hospital or healthcare setting when oral treatment is not suitable.
Drug Interactions
The following medicines may interact with Posaconazole and require closer monitoring or dose adjustments:
- Ergot medicines: Do not take posaconazole with ergot medicines, such as ergotamine or dihydroergotamine. This combination may cause dangerously reduced blood flow to the arms, legs, or other parts of the body.
- Medicines that affect heart rhythm: Certain medicines that can prolong the QT interval must not be taken with posaconazole because the combination may cause dangerous changes in heart rhythm.
- Sirolimus: Do not take sirolimus with posaconazole, as posaconazole can greatly increase the amount of sirolimus in the blood and raise the risk of serious side effects.
- Tacrolimus and cyclosporine: Posaconazole may increase the levels of these medicines in the blood. Your doctor may adjust the dose and monitor the medicine levels more closely.
- Certain cholesterol-lowering medicines: Do not take posaconazole with simvastatin or lovastatin, as it may greatly increase their levels and raise the risk of severe muscle damage. Other statins, including atorvastatin, may also require closer monitoring or a change in treatment.
- Blood thinners: Posaconazole may increase the effects of some blood thinners and raise the risk of bleeding. Your doctor may recommend closer monitoring.
- Acid-reducing medicines: Some acid-reducing medicines may reduce the absorption of certain posaconazole formulations. Ask your doctor or pharmacist whether these medicines can be taken together.
Drug-Drug Interactions Checker List:
Safety Advice
Alcohol
consult your doctorThe interaction of Posaconazole with alcohol is unknown. If you have any concerns regarding this, please discuss with your doctor.
Pregnancy
consult your doctorPosaconazole should not be used when pregnancy unless clearly necessary. So, inform your doctor if you are pregnant or suspect pregnancy. Your doctor will weigh the benefits and potential risks before prescribing Posaconazole.
Breast Feeding
consult your doctorThere is no substantial research yet on using Posaconazole in breastfeeding/nursing mothers. Inform your doctor if you are a nursing mother before taking Posaconazole; your doctor will decide whether Posaconazole can be taken by breastfeeding mothers.
Driving
cautionIt is unknown whether Posaconazole alters the ability to drive, so do not drive or operate machinery if you experience any symptoms affecting your ability to concentrate and react.
Liver
consult your doctorInform your doctor before taking the Posaconazole if you have a liver impairment/disorder history. Your doctor will prescribe only if the benefits outweigh the risks.
Kidney
consult your doctorInform your doctor before taking the Posaconazole if you have a kidney impairment/disorder history. Your doctor will prescribe only if the benefits outweigh the risks.
Children
consult your doctorPlease consult a doctor before using Posaconazole for children.
Habit Forming
Diet & Lifestyle Advise
- Take with high-fat meals: Whenever possible, take your tablet with a full meal or a high-fat snack, as this helps your body absorb the medicine more efficiently.
- Avoid grapefruit: Do not eat grapefruit or drink grapefruit juice while taking Posaconazole, as it can raise the levels of the medicine in your blood to unsafe levels.
- Practice strict hygiene: Wash your hands frequently and keep your living spaces clean to minimise exposure to environmental moulds and fungi, especially if your immune system is weak.
- Avoid dusty environments: Stay away from construction sites, soil, agricultural areas, or dusty places where fungal spores are highly concentrated in the air.
Special Advise
Regular blood tests are recommended before and while taking Posaconazole to monitor liver functioning, especially if you have any liver problems.
Patients Concern
Disease/Condition Glossary
Fungal infection: Fungal infection occurs when a fungus enters, infects, and multiplies in the body. Fungi can live in water, soil, air, and plants. Fungi affect any body part, including the mouth, throat, oesophagus, lungs, bladder, genital area, and blood. Mild fungal skin infections are common and can cause rashes. Fungal infections affecting body organs like the lungs can cause flu or tuberculosis. Some fungal diseases like cryptococcal meningitis and blood infections can be fatal. A few common fungal infections are yeast infections that affect the genital area, oesophagus, and urinary tract caused by Candida.
Invasive aspergillosis: Invasive aspergillosis occurs when Aspergillus causes serious infection and usually affects people with weakened immune systems, such as those who have had an organ transplant or a stem cell transplant. Invasive aspergillosis most commonly affects the lungs but can also spread to other body parts.
FAQs
Posaconazole is used to treat fungal infections and prophylaxis of invasive Aspergillus and Candida infections in severely immunocompromised patients.
Posaconazole contains a medicine called posaconazole. It is a triazole antifungal agent and exerts its antifungal activity through the blockage of certain enzymes (P-450 dependent enzyme, sterol 14α-demethylase). This leads to inhibiting the synthesis of ergosterol, a key component of the fungal cell membrane, and the accumulation of methylated sterol precursors. This results in inhibiting fungal cell growth and, ultimately, cell death. Thus, it treats infections.
Posaconazole is not recommended for coadministration with anticoagulants, So if you are under anticoagulant therapy, inform your doctor before prescribing Posaconazole.
If you are allergic to posaconazole or similar antifungals such as fluconazole, itraconazole, ketoconazole, or voriconazole, you should not use it. When combined with certain medications, posaconazole can have unfavourable or dangerous side effects.
Like all medicines, this medicine may cause side effects such as diarrhoea, nausea, fever, vomiting, headache, coughing and low potassium levels in the blood, although not everybody gets them. Most of these side effects of Posaconazole do not require medical attention and gradually resolve over time. However, if the side effects persist or worsen, please consult your doctor.
Take Posaconazole as prescribed by your doctor. You are advised to take Posaconazole for as long as your doctor has prescribed it for you based on your medical condition.
Food requirements may vary depending on the formulation. Follow the instructions provided with your medicine or ask your doctor or pharmacist how to take it correctly.
In some cases, Posaconazole can affect your liver. Your doctor will likely perform regular blood tests to monitor your liver function while you are taking this medicine. Talk to your doctor immediately if you notice yellowing of your skin or eyes.
It is best to avoid alcohol while taking this medicine. Alcohol can increase the risk of liver irritation and worsen side effects like dizziness or nausea. Talk to your doctor about your alcohol intake.
Posaconazole can occasionally affect your heart rhythm. If you feel your heart racing, fluttering, or beating irregularly, seek medical attention immediately. Talk to your doctor to ensure it is safe to continue the medication.
Posaconazole is generally not recommended during pregnancy unless the potential benefit outweighs the risk to the unborn baby. Effective birth control should be used during treatment. Talk to your doctor if you are pregnant or planning to become pregnant.
Posaconazole may be given through a vein as an intravenous (IV) infusion in a hospital or healthcare setting when oral treatment is not suitable or cannot be taken. Your doctor will decide which formulation is most appropriate based on your condition and treatment needs.
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