Is It Safe To Take Meprate For Irregular Periods And Ovarian Cysts, And Could It Cause Permanent Weight Gain?

I have irregular periods for the past few months and this month i havent got periodsi recently came to know that have asimple cyst and a hemorragic cyst on each ovary doctor prescribed to take meprate is it safe to take or can it cause any other problems or can it cause unwanted weight gain which is permanent Or have to replace with novelon