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Drug Interactions between erdafitinib and Lonsurf

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

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Interactions between your drugs

Moderate

tipiracil erdafitinib

Applies to: Lonsurf (tipiracil / trifluridine) and erdafitinib

GENERALLY AVOID: Coadministration with erdafitinib may increase the plasma concentrations of drugs that are substrates of organic cation transporter 2 (OCT2), resulting in increased toxicity of these drugs. In vitro, erdafitinib has been shown to be an inhibitor of OCT2. However, no pharmacokinetic data are available from drug interaction studies.

MANAGEMENT: Concomitant use of erdafitinib and OCT2 substrates should generally be avoided or the dose of the OCT2 substrates should be reduced based on tolerability.

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

Drug and food interactions

Moderate

trifluridine food

Applies to: Lonsurf (tipiracil / trifluridine)

ADJUST DOSING INTERVAL: Administration of trifluridine-tipiracil with a standardized high-fat, high-calorie meal has been shown to decrease trifluridine peak plasma concentration (Cmax) as well as tipiracil Cmax and systemic exposure (AUC) by approximately 40% compared to administration in a fasting state in patients with cancer given a single 35 mg/m2 dose. No change in trifluridine AUC was observed.

MANAGEMENT: Based on the observed correlation between increases in the Cmax of trifluridine and decreases in neutrophil counts, trifluridine-tipiracil should be taken within one hour after completion of the morning and evening meals.

References (1)
  1. (2015) "Product Information. Lonsurf (tipiracil-trifluridine)." Taiho Oncology, Inc.

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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