Which of the following opioid is used by transdermal route in cases of malignancy associated pain -: (A) Fentanyl, (B) Morphine, (C) Codeine, (D) Oxycodone
Answer is A. Ans. is 'a' i.e., Fentanyl o Fentanyl is opioid analgesic used via transdermal delivery systems in case of chronic pain.