Drug Interaction Report
1 potential interaction and/or warning found for the following 2 drugs:
- Adriamycin RDF (doxorubicin)
- tucatinib
Interactions between your drugs
DOXOrubicin tucatinib
Applies to: Adriamycin RDF (doxorubicin), tucatinib
MONITOR: Coadministration with tucatinib may increase the plasma concentrations of CYP450 3A4 substrates. The mechanism involves tucatinib-mediated inhibition of CYP450 3A isoenzymes. When a single 2 mg dose of midazolam, a CYP450 3A substrate, was administered with tucatinib (300 mg twice daily), midazolam peak plasma concentration (Cmax) and systemic exposure (AUC) increased by 3-fold and 5.7-fold, respectively. Increased exposure to the CYP450 3A substrate may increase the risk of toxicity.
MANAGEMENT: Caution is advised when tucatinib is used concomitantly with drugs that undergo metabolism by CYP450 3A4. Dosage adjustments as well as clinical and laboratory monitoring may be appropriate for some drugs whenever tucatinib is added to or withdrawn from therapy.
References (1)
- (2020) "Product Information. Tukysa (tucatinib)." Seattle Genetics Inc
Drug and food interactions
No alcohol/food interactions were found with the drugs in your list. However, this does not necessarily mean no food interactions exist. Always consult your healthcare provider.
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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