Drug Interaction Report
2 potential interactions and/or warnings found for the following 2 drugs:
- afatinib
- pitolisant
Interactions between your drugs
afatinib pitolisant
Applies to: afatinib, pitolisant
MONITOR: Coadministration with pitolisant may reduce plasma concentrations of substrates of CYP450 2C, P-glycoprotein (P-gp), and uridine diphosphate glucuronosyltransferases (UGTs). Based on in vitro data, pitolisant and its main metabolites may induce CYP450 2C, P-gp, and UGTs. Clinical data are not available.
MANAGEMENT: Caution is recommended if pitolisant is used in combination with substrates of CYP450 2C, P-gp, and/or UGTs. Clinical and laboratory monitoring may be appropriate for some drugs whenever pitolisant is added to or withdrawn from therapy.
References (2)
- Cerner Multum, Inc. "UK Summary of Product Characteristics."
- (2019) "Product Information. Wakix (pitolisant)." Harmony Biosciences, LLC
Drug and food interactions
afatinib food
Applies to: afatinib
ADJUST DOSING INTERVAL: Food may reduce the oral bioavailability of afatinib. According to the product labeling, administration of afatinib with a high-fat meal decreased peak plasma concentration (Cmax) by 50% and systemic exposure (AUC) by 39% compared to administration in the fasted state.
MANAGEMENT: Afatinib should be taken at least 1 hour before or 2 hours after a meal.
References (1)
- (2013) "Product Information. Gilotrif (afatinib)." Boehringer Ingelheim
Therapeutic duplication warnings
No duplication 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
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| 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. | |
| No interaction information available. |
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Further information
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