Medically reviewed on June 7, 2018
Commonly used brand name(s)
In the U.S.
Available Dosage Forms:
Therapeutic Class: Antifungal
Chemical Class: Triazole
Uses For posaconazole
Posaconazole injection is used to prevent certain fungus (yeast) infections in patients who have a weakened immune system (eg, hematopoietic stem cell transplant or HSCT recipients, or patients with blood cancers).
Posaconazole is to be given only by or under the direct supervision of a doctor.
Before Using posaconazole
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For posaconazole, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to posaconazole or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies have not been performed on the relationship of age to the effects of posaconazole injection in the pediatric population. Safety and efficacy have not been established.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of posaconazole injection in the elderly.
|All Trimesters||C||Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.|
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Interactions with Medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are receiving posaconazole, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using posaconazole with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
- Isavuconazonium Sulfate
Using posaconazole with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Ado-Trastuzumab Emtansine
- Arsenic Trioxide
- Brentuximab Vedotin
- Doxorubicin Hydrochloride Liposome
- Inotuzumab Ozogamicin
- Irinotecan Liposome
- Sodium Phosphate
- Sodium Phosphate, Dibasic
- Sodium Phosphate, Monobasic
- Vincristine Sulfate Liposome
Using posaconazole with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Aripiprazole Lauroxil
Interactions with Food/Tobacco/Alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Other Medical Problems
The presence of other medical problems may affect the use of posaconazole. Make sure you tell your doctor if you have any other medical problems, especially:
- Heart disease, history of or
- Heart rhythm problems (eg, arrhythmia, QT prolongation) or
- Liver disease or
- Mineral imbalance (low potassium, magnesium, or calcium in the blood)—These conditions may cause side effects to become worse.
- Kidney disease, moderate to severe—Use is not recommended.
Proper Use of posaconazole
A nurse or other trained health professional will give you posaconazole in a hospital. Posaconazole is given through a needle placed in one of your veins. The medicine must be injected slowly, so your IV tube will need to stay in place for 30 to 90 minutes.
Posaconazole should come with a patient information leaflet. Read and follow these instructions carefully. Ask your doctor if you have any questions.
Precautions While Using posaconazole
It is very important that your doctor check your progress at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it. Blood tests will be needed to check for unwanted effects.
You should not use atorvastatin (Lipitor®), lovastatin (Mevacor®), pimozide (Orap®), quinidine (Quinaglute®), simvastatin (Zocor®), sirolimus (Rapamune®), or ergotamine medicines (eg, bromocriptine, dihydroergotamine, ergonovine, ergotamine, methylergonovine, methysergide, Cafergot®, Ergomar®, Wigraine®). Using any of them together with posaconazole may increase the chance of unwanted effects.
Posaconazole can cause changes in heart rhythms, such as a condition called QT prolongation. It may change the way your heart beats and cause fainting or serious side effects in some patients. Contact your doctor right away if you have any symptoms of heart rhythm problems, such as fast, pounding, or irregular heartbeats.
Check with your doctor right away if you have pain or tenderness in the upper stomach, pale stools, dark urine, loss of appetite, nausea, unusual tiredness or weakness, or yellow skin or eyes. These could be symptoms of a serious liver problem.
Check with your doctor right away if you have severe diarrhea or vomiting while using posaconazole.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.
Posaconazole Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor or nurse immediately if any of the following side effects occur:
- Black, tarry stools
- blurred vision
- decreased urine
- fever or chills
- increased thirst
- irregular heartbeat
- loss of appetite
- mood or mental changes
- muscle pain or cramps
- muscle spasms (tetany) or twitching
- nausea or vomiting
- numbness or tingling in the hands, feet, or lips
- pinpoint red spots on the skin
- pounding in the ears
- slow or fast heartbeat
- swelling of the hands, ankles, feet, or lower legs
- trouble breathing
- unusual bleeding or bruising
- unusual tiredness or weakness
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
- Abdominal or stomach pain
- difficulty having a bowel movement (stool)
- small red or purple spots on the skin
- upper abdominal or stomach pain
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
See also: Side effects (in more detail)
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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More about posaconazole
- Posaconazole Side Effects
- During Pregnancy
- Dosage Information
- Drug Interactions
- En Español
- 1 Review
- Drug class: azole antifungals
- Posaconazole oral/injection
- Posaconazole Delayed-Release Tablets
- Posaconazole Injection
- Posaconazole Oral Suspension
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