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Drug Interactions between donepezil and Exjade

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

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Interactions between your drugs

Moderate

donepezil deferasirox

Applies to: donepezil and Exjade (deferasirox)

MONITOR: Coadministration with drugs that are inducers of the CYP450 3A4 and/or 2D6 enzymatic pathways may decrease the plasma concentrations of donepezil. The mechanism is accelerated clearance of donepezil due to enhanced CYP450 activities. In addition, when two or more medications with similar adverse effect profiles are given concurrently, the likelihood of experiencing these adverse reactions may be increased. For example, coadministration with other agents that can prolong the QT interval (e.g., apalutamide, encorafenib, enzalutamide) may result in additive effects and an increased risk of ventricular arrhythmias like torsade de pointes.

MANAGEMENT: While clinical data are lacking, the possibility of a diminished therapeutic response to donepezil should be considered in patients receiving concomitant inducer agents. If the CYP450 3A4 inducer also carries a risk of prolonging the QT interval, then obtaining more frequent electrocardiograms (ECGs) to monitor the QT interval may be advisable. Patients should be counseled to seek immediate medical attention if they experience symptoms that could indicate the occurrence of torsade de pointes such as dizziness, lightheadedness, syncope, palpitations, irregular heartbeat, and/or shortness of breath. The prescribing information for the concomitant CYP450 3A4 inducers should be consulted for specific recommendations.

References

  1. (2001) "Product Information. Aricept (donepezil)." Pfizer U.S. Pharmaceuticals

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Drug and food interactions

Moderate

deferasirox food

Applies to: Exjade (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. (2005) "Product Information. Exjade (deferasirox)." Novartis 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.

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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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