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Drug Interactions between axitinib and deferasirox

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

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Interactions between your drugs

Moderate

deferasirox axitinib

Applies to: deferasirox and axitinib

MONITOR: Coadministration with inducers of CYP450 3A4 may decrease the plasma concentrations of axitinib, which is primarily metabolized by the isoenzyme. In a study of 40 healthy, nonsmoking, male volunteers, administration of a single 5 mg dose of axitinib on day 8 of treatment with the potent CYP450 3A4 inducer rifampin (600 mg/day for 9 days) resulted in a 71% decrease in mean axitinib peak plasma concentration (Cmax) and 79% decrease in mean systemic exposure. The extent to which other, less potent inducers of CYP450 3A4 may interact with axitinib is unknown.

MANAGEMENT: The potential for diminished pharmacologic effects of axitinib should be considered during coadministration with CYP450 3A4 inducers. Alternative treatments may be required if an interaction is suspected.

References (2)
  1. (2012) "Product Information. Inlyta (axitinib)." Pfizer U.S. Pharmaceuticals Group
  2. Pithavala YK, Tortorici M, Toh M, et al. (2010) "Effect of rifampin on the pharmacokinetics of axitinib (AG-013736) in Japanese and Caucasian healthy volunteers." Cancer Chemother Pharmacol, 65, p. 563-70

Drug and food interactions

Moderate

deferasirox food

Applies to: deferasirox

ADJUST DOSING INTERVAL: According to product labeling, the bioavailability of deferasirox was variably increased when taken with a meal.

MANAGEMENT: To ensure consistent plasma drug levels, deferasirox should be taken on an empty stomach 30 minutes before eating preferably at the same time everyday.

References (1)
  1. (2005) "Product Information. Exjade (deferasirox)." Novartis Pharmaceuticals
Moderate

axitinib food

Applies to: axitinib

GENERALLY AVOID: Grapefruit juice may increase the plasma concentrations of axitinib. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit.

MANAGEMENT: Patients treated with axitinib should avoid consumption of grapefruit, grapefruit juice, and any supplement containing grapefruit extract. Axitinib may be administered with or without food.

References (1)
  1. (2012) "Product Information. Inlyta (axitinib)." Pfizer U.S. Pharmaceuticals Group

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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