Misoprostol is a: (A) Prostaglandin E1 analogue, (B) Prostaglandin E2 analogue, (C) Prostaglandin antagonist, (D) Antiprogestin
Answer is A. Natural prostaglandin in body is PG E2 whereas Misoprostol and alprostadil are synthetic prostaglandins which are PG E1 analogues. Refer kDT 6/e p181