Interactions between octreotide and Alfenta (alfentanil)
alfentanil and octreotide (Moderate Drug-Drug)
MONITOR: Coadministration with inhibitors of CYP450 3A4 may increase the plasma concentrations of alfentanil, which is primarily metabolized by the isoenzyme. Alfentanil clearance has been reported to reduce significantly in the presence of moderate or potent inhibitors of CYP450 3A4 such as cimetidine, diltiazem, fluconazole, and troleandomycin. Isolated reports of prolonged sedation and respiratory depression have also been associated with concomitant use of inhibitors such as erythromycin.
MANAGEMENT: Patients receiving alfentanil in combination with CYP450 3A4 inhibitors should be carefully monitored for excessive central nervous system and respiratory depression, and dosage adjustments made accordingly if necessary. Recovery time from alfentanil anesthesia may be prolonged in some cases.
