This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical Abortion, Subject name: Gynaecology & Obstetrics
All of the following drug have been used for medical abortion except: 
Select and explain. 
A. Mifepristone, B. Misoprostal, C. Methotrexate, D. Atosiban
D: Atosiban
Answer: D: Atosiban 
Explanation: Ans. is 'd' Atosiban Drugs used for abortionProstaglandinsPGE1 analogues are usedMisoprostolGemaristMifepristone (Ru-486)It is a progesterone antagonist. It is effective upto 9 weeksMethotrexateEffective upto 9 weeksAtosiban - is an oxytocin analogue and used as tocolytic.