Therapeutic Group: Analgesic, Anti Inflammatory Presentation Opifen 100 Injection: Each 2 ml ampoule contains Fentanyl Citrate BP equivalent to Fentanyl BP 100 mcg. Description Fentanyl is a potent narcotic analgesic with a rapid onset and short duration of action. The principal actions of therapeutic value are analgesia and sedation. The action of Fentanyl is qualitatively […]