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Drug Interactions between Solurex and Tasigna

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

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Interactions between your drugs

Major

dexAMETHasone nilotinib

Applies to: Solurex (dexamethasone) and Tasigna (nilotinib)

GENERALLY AVOID: Coadministration with potent inducers of CYP450 3A4 may significantly decrease the plasma concentrations of nilotinib, which is primarily metabolized by the isoenzyme. In healthy subjects receiving the potent inducer rifampin (600 mg once daily for 12 days), nilotinib systemic exposure (AUC) was decreased approximately 80%. Data are not available for nilotinib in combination with other, less potent CYP450 3A4 inducers.

MANAGEMENT: Concomitant use of nilotinib with potent CYP450 3A4 inducers should generally be avoided due to the potential for reduced efficacy. If coadministration is required, a dosage increase for nilotinib may be necessary depending on patient tolerability. The dosage should be reduced to the indicated dosage following discontinuation of the potent CYP450 3A4 inducer.

References

  1. "Product Information. Tasigna (nilotinib)." Novartis Pharmaceuticals (2007):

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Drug and food interactions

Major

nilotinib food

Applies to: Tasigna (nilotinib)

GENERALLY AVOID: Grapefruit juice may increase the plasma concentrations of nilotinib. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruits. Because nilotinib is associated with concentration-dependent prolongation of the QT interval, increased levels may potentiate the risk of ventricular arrhythmias such as torsade de pointes and sudden death.

ADJUST DOSING INTERVAL: Food increases the oral bioavailability of nilotinib. The mechanism of interaction is unknown. Compared to the fast state, nilotinib systemic exposure (AUC) increased by 82% when the dose was given 30 minutes after a high-fat meal. Because nilotinib is associated with concentration-dependent prolongation of the QT interval, increased levels may potentiate the risk of ventricular arrhythmias such as torsade de pointes and sudden death.

MANAGEMENT: Patients treated with nilotinib should avoid consumption of grapefruit, grapefruit juice, and any supplement containing grapefruit extract. In addition, no food should be consumed for at least 2 hours before and 1 hour after a nilotinib dose.

References

  1. "Product Information. Tasigna (nilotinib)." Novartis Pharmaceuticals (2007):

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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.

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