... started to have horrible side effects. My doctor looked it up and said it's like less then 2% besides weight gain and that is almost a 100% side effect.. not bad just be prepared (I was one of those 100 & could eat anything) I gain around 15lbs in 3 months. The 2% side effect is my hair starting falling out & I mean BAD! My pain doctor said he had never seen such a thing. Well because it worked for the pain he wants to try other's (meds) in the same category... all have that side effect. I have said I won't for at least 4 months.. I'm so scared of it happening again!!