Tezacaftor and Ivacaftor and Viramune (Nevirapine Tablets)
Determining the interaction of Tezacaftor and Ivacaftor and Viramune (Nevirapine Tablets) and the possibility of their joint administration.
In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.
Consumer:Nevirapine may reduce the blood levels and effects of ivacaftor. Contact your doctor if your symptoms worsen or your condition changes during treatment with these medications. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Professional:MONITOR: Coadministration with inducers of CYP450 3A4 may decrease the plasma concentrations of ivacaftor, which is primarily metabolized by the isoenzyme. In study subjects, administration of a single 150 mg dose of ivacaftor with the potent CYP450 3A4 inducer rifampin (600 mg once daily) decreased ivacaftor peak plasma concentration (Cmax) and systemic exposure (AUC) by 80% and 89%, respectively, compared to administration of ivacaftor alone. When lumacaftor/ivacaftor was coadministered with rifampin, lumacaftor pharmacokinetics were minimally affected, but ivacaftor Cmax and AUC decreased by an average of 50% and 57%, respectively. No pharmacokinetic data are available for elexacaftor or tezacaftor, but decreased exposures are expected according to prescribing information.
MANAGEMENT: The potential for diminished pharmacologic effects of ivacaftor-containing medications should be considered during coadministration with CYP450 3A4 inducers. Alternative treatments may be required if an interaction is suspected.
- "Product Information. Kalydeco (ivacaftor)." Vertex Pharmaceuticals, Cambridge, MA.
- "Product Information. Trikafta (elexacaftor/ivacaftor/tezacaftor)." Vertex Pharmaceuticals, Cambridge, MA.
- "Product Information. Orkambi (ivacaftor-lumacaftor)." Vertex Pharmaceuticals, Cambridge, MA.
- "Product Information. Symdeko 4-Week (ivacaftor-tezacaftor)." Vertex Pharmaceuticals, Cambridge, MA.
Generic Name: ivacaftor / tezacaftor
Brand name: Symdeko, Symdeko 4-Week
Synonyms: Ivacaftor and tezacaftor
Generic Name: nevirapine
Brand name: Viramune, Viramune XR
Synonyms: Viramune
In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.
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