fentanyl overdose symptoms and duration Options
fentanyl, cyproheptadine. Either improves toxicity from the other by pharmacodynamic synergism. Modify Therapy/Check Carefully. Coadministration of fentanyl with anticholinergics may perhaps boost risk for urinary retention and/or critical constipation, which can bring on paralytic ileus.Keep an eye on Intently (2)efavirenz will lessen the level or