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Drug Interactions between echinacea and zanubrutinib

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

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Interactions between your drugs

Moderate

echinacea zanubrutinib

Applies to: echinacea and zanubrutinib

Consumer information for this interaction is not currently available.

MONITOR: Coadministration with echinacea may alter the plasma concentrations and therapeutic effects of drugs that are substrates of CYP450 3A4. Echinacea appears to inhibit intestinal CYP450 3A4, which would lead to an increase in oral midazolam (a sensitive 3A4 substrate) bioavailability; however, plasma levels of midazolam following oral administration do not appear to be affected by echinacea. In contrast, it appears that echinacea may also induce hepatic CYP450 3A4; thereby increasing the hepatic clearance of drugs that are substrates of CYP450 3A4. According to reports, echinacea may increase the hepatic clearance of intravenous (IV) midazolam by 34% and decrease the area under the concentration-time curve (AUC) and half-life of IV midazolam by 20% and 42%, respectively.

MANAGEMENT: In general, patients should be advised to consult their healthcare provider before using any herbal or alternative medicines. If echinacea is prescribed with a drug that is a CYP450 3A4 substrate, the possibility of an altered (increased or decreased) therapeutic response should be considered. Patients should be monitored more closely following the addition or withdrawal of echinacea and the dosage of the CYP450 3A4 substrate adjusted as necessary.

Drug and food interactions

Major

zanubrutinib food

Applies to: zanubrutinib

Grapefruit juice and Seville orange juice can increase the blood levels of zanubrutinib. This may increase side effects such as rash, diarrhea, constipation, cough, hemorrhage, development of other cancers, abnormal heart rhythm, and impaired bone marrow function resulting in low numbers of different types of blood cells. You may also be more likely to develop anemia, bleeding problems, or infections due to low blood cell counts. You should avoid the consumption of Seville oranges, Seville orange juice, grapefruit and grapefruit juice during treatment with zanubrutinib. Be sure to take the medication at approximately the same time(s) everyday to maintain consistent blood levels and effects. Talk to your doctor or pharmacist if you have questions on how to take this or other medications you are prescribed. 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.

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.

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