One of the longer acting analogue among uterine stimulants: (A) Di hydro ergotamine, (B) Carbetocin, (C) Atosiban, (D) Magnesium salts
Answer is B. Carbetocin is a newer longer acting analogue of oxytocin . Now a days oxytocin use is reduced and this newer acting analogue is being used. Ref: katzung 12th ed, endocrinology.