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Drug Interactions between darunavir and olutasidenib

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

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Interactions between your drugs

Moderate

darunavir olutasidenib

Applies to: darunavir and olutasidenib

MONITOR: Coadministration with olutasidenib may decrease the plasma concentrations of drugs that are substrates of CYP450 3A4. Based on in vitro studies, olutasidenib may increase clearance via induction of CYP450 3A4, resulting in decreased plasma concentrations of agents that are metabolized by the isoenzyme. Clinical and pharmacokinetic data are currently lacking.

MANAGEMENT: Caution is advised if olutasidenib is used concomitantly with drugs that are substrates of CYP450 3A4, particularly sensitive substrates or those with a narrow therapeutic range. The prescribing information for olutasidenib recommends avoiding coadministration with CYP450 3A4 substrates for which minimal concentration changes may lead to therapeutic failure. If coadministration is required, clinical and laboratory monitoring may be appropriate whenever olutasidenib is added to or withdrawn from therapy. The prescribing information for concomitant medications should be consulted to assess the benefits versus risks of coadministration and for any dosage adjustments that may be required.

References

  1. (2022) "Product Information. Rezlidhia (olutasidenib)." Rigel Pharmaceuticals

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Drug and food interactions

Moderate

darunavir food

Applies to: darunavir

ADJUST DOSING INTERVAL: Food enhances the absorption and oral bioavailability of darunavir administered in combination with low-dose ritonavir. The mechanism is unknown. When administered with food, the peak plasma concentration (Cmax) and area under the plasma concentration-time curve (AUC) of darunavir were approximately 30% higher than when administered in the fasting state. Darunavir exposure was similar for the range of meals studied. The total caloric content of the various meals evaluated ranged from 240 Kcal (12 grams fat) to 928 Kcal (56 grams fat).

MANAGEMENT: To ensure maximal oral absorption, darunavir coadministered with ritonavir should be taken with food. The type of food is not important.

References

  1. (2006) "Product Information. Prezista (darunavir)." Ortho Biotech Inc

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Moderate

olutasidenib food

Applies to: olutasidenib

ADJUST DOSING INTERVAL: Coadministration with a high-fat meal may increase the plasma concentrations of olutasidenib. According to the product labeling, administration of a single 150 mg dose with a high-fat meal (approximately 800 to 1000 calories, with approximately 50% of those calories from fat) increased olutasidenib peak plasma concentration (Cmax) and systemic exposure (AUC) by 191% and 83%, respectively, in healthy subjects.

MANAGEMENT: Olutasidenib should be administered at about the same time each day, on an empty stomach at least 1 hour before or 2 hours after a meal.

References

  1. (2022) "Product Information. Rezlidhia (olutasidenib)." Rigel Pharmaceuticals

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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.

See also

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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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