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Drug Interactions between atazanavir / cobicistat and posaconazole

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

atazanavir posaconazole

Applies to: atazanavir / cobicistat and posaconazole

Posaconazole may increase the blood levels and effects of atazanavir. This may increase the risk and/or severity of side effects such as jaundice, kidney stones, gallstones, high blood sugar, diabetes, and irregular heartbeat. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Contact your doctor if you develop yellowing of the skin or eyes, pain in your side or lower back, painful urination, blood in your urine, abdominal pain or tenderness, or sudden dizziness, lightheadedness, fainting, or a slow heart rate during treatment with these medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

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Moderate

posaconazole cobicistat

Applies to: posaconazole and atazanavir / cobicistat

Using cobicistat together with posaconazole may increase the blood levels and side effects of one or both medications. Talk to your doctor if you have any questions or concerns. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications. Contact your doctor if your condition changes or you experience increased side effects. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

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Drug and food interactions

Moderate

atazanavir food

Applies to: atazanavir / cobicistat

Food can enhance the levels of atazanavir in your body. To ensure maximal oral absorption, atazanavir should be administered with or immediately after a meal. This will make it easier for your body to absorb the medication.

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Moderate

posaconazole food

Applies to: posaconazole

Food significantly increases the absorption of posaconazole from the tablet or suspension formulations. The manufacturer recommends that you take the tablet with food and the oral suspension during or immediately (within 20 minutes) after a full meal. If you cannot eat a full meal, you should take the oral suspension with a liquid nutritional supplement like Ensure or an acidic carbonated beverage like ginger ale. Do not take these medications on an empty stomach, as it may lead to inadequate blood levels and reduced effectiveness. Ask your doctor before using alcohol together with posaconazole from delayed release suspension formulations as this may cause an increase in side effects. Talk to your doctor or pharmacist if you have any questions on how to use the medication properly.

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Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.


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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.