Specific compounds present in grapefruit are acknowledged to inhibit CYP450 3A4 and should enhance the bioavailability of swallowed fentanyl (reportedly up to 75% of the dose) and PecFent injection is usually administered intravenously either for a bolus or by infusion & by intramuscular route also. The dose of fentanyl needs https://lorenzceutique.com/