Drug Interaction Report
2 potential interactions and/or warnings found for the following 2 drugs:
- dalfopristin / quinupristin
- etravirine
Interactions between your drugs
dalfopristin etravirine
Applies to: dalfopristin / quinupristin, etravirine
MONITOR: Coadministration with inhibitors of CYP450 2C19, 2C9, and/or 3A4 may increase the plasma concentrations of etravirine, which is a substrate of these isoenzymes.
MANAGEMENT: Because safety data regarding increased etravirine exposures are limited, caution is advised if etravirine is prescribed in combination with CYP450 2C19, 2C9, and/or 3A4 inhibitors.
References (1)
- (2008) "Product Information. Intelence (etravirine)." Ortho Biotech Inc
Drug and food interactions
etravirine food
Applies to: etravirine
ADJUST DOSING INTERVAL: Coadministration with food increases the oral bioavailability of etravirine. The mechanism is unknown. Compared to administration following a meal, the systemic exposure (AUC) to etravirine was decreased by about 50% when the drug was administered under fasting conditions. The types of meal studied (ranging from 345 kilocalories containing 17 grams fat to 1160 kilocalories containing 70 grams fat) did not appear to make a difference with respect to impact on etravirine bioavailability.
MANAGEMENT: Etravirine should always be administered following a meal.
References (1)
- (2008) "Product Information. Intelence (etravirine)." Ortho Biotech Inc
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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