<s>[INST] I am Rosy 35 yrs.  I am on ovulation induction treatment and on day 20 days post ovulation right now. Today my follicular study report says dominant follicle is ruptured.  I was asked to take duphaston tablet twice daily for 10 days. My ques is what is the difference betweem taking Susten 200 and Duphaston. [/INST] HAI WELCOME TO HCM BOTH are same group of drugs contain progestrone.duphastone is having less gastric side effect than susten.you can take duphastone safely in luteal phase. </s>