THE 5-SECOND TRICK FOR FENTANYL LEGAL USE

fentanyl, cyproheptadine. Either boosts toxicity on the other by pharmacodynamic synergism. Modify Therapy/Check Closely. Coadministration of fentanyl with anticholinergics may perhaps improve risk for urinary retention and/or serious constipation, which can lead to paralytic ileus.If coadministration of CYP3A4 inhibitors with fentanyl is necessary