Orlistat
"I tried Orlistat years ago but was ignorant towards its use (not controlling fatty foods and having lovely sunset yellow accidents), so gave it up. I have struggled with PCOS (Poly Cystic Ovaries Syndrome) since the age of 17 and one of my symptoms has been WEIGHT. Always been overweight and when I do diet and exercise the hormonal imbalance will make it harder to lose the Ib's and I gain muscle instead. After two kids its become harder to lose any weight and decided to go back to prescribed Orlistat. 
Now 4 days in, bloated, flatulance, no accidents, looser stools and bloatness goes away after relieving myself. Not weighed myself yet. (2nd day I felt dizziness, but no more). I'm careful with fat consumption and try not to snack in between meals."