Nelfinavir drug interactions
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mohamed Moubarak, M.D. [2]
Drug Interactions
- Potential for VIRACEPT to Affect Other Drugs
Nelfinavir is an inhibitor of CYP3A. Coadministration of VIRACEPT and drugs primarily metabolized by CYP3A (e.g., dihydropyridine calcium channel blockers, HMG-CoA reductase inhibitors, immunosuppressants and PDE5 inhibitors) may result in increased plasma concentrations of such drugs that could increase or prolong both its therapeutic and adverse effects. (see Tables 3 and 6).
- Potential for Other Drugs to Affect VIRACEPT
Nelfinavir is metabolized by CYP3A and CYP2C19. Coadministration of VIRACEPT and drugs that induce CYP3A or CYP2C19, such as rifampin, may decrease nelfinavir plasma concentrations and reduce its therapeutic effect. Coadministration of VIRACEPT and drugs that inhibit CYP3A or CYP2C19 may increase nelfinavir plasma concentrations.
- Established and Other Potentially Significant Drug Interactions
Table 6 provides the effect on concentrations of VIRACEPT or concomitant drug as a result of coadministration with VIRACEPT. These recommendations are based on either drug interaction studies or predicted interactions due to the expected magnitude of interaction and potential for serious adverse events or loss of efficacy.[1]
References
- ↑ "VIRACEPT (NELFINAVIR MESYLATE) TABLET, FILM COATED VIRACEPT (NELFINAVIR MESYLATE) POWDER [AGOURON PHARMACEUTICALS INC]". Text " accessdate" ignored (help)
Adapted from the FDA Package Insert.