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Drug Interactions between Dexamethasone Intensol and erdafitinib

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

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Interactions between your drugs

Major

dexAMETHasone erdafitinib

Applies to: Dexamethasone Intensol (dexamethasone) and erdafitinib

ADJUST DOSE: Coadministration with moderate inducers of CYP450 2C9 or 3A4 may decrease the plasma concentrations and therapeutic effects of erdafitinib. The mechanism is induction of CYP450 2C9- or 3A4-mediated metabolism of erdafitinib, which has been shown to be metabolized by these isoenzymes.

MANAGEMENT: According to the manufacturer, if a moderate CYP450 2C9 or 3A4 inducer is coadministered at the start of erdafitinib therapy, the recommended dose of erdafitinib should be administered. If a moderate CYP450 2C9 or 3A4 inducer is coadministered after the initial dose increase period, the dose of erdafitinib may be increased up to 9 mg once daily based on serum phosphate levels and tolerability. When a moderate CYP450 2C9 or 3A4 inducer is discontinued, the current dose of erdafitinib may be continued in the absence of erdafitinib toxicity.

References (1)
  1. (2019) "Product Information. Balversa (erdafitinib)." Janssen Products, LP

Drug and food interactions

No alcohol/food interactions were found. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

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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