I gained 50lbs from abilify (aripiprazole). i tried metphorman but it made me sick. it's so hard to lose even a pound with diet and exercise. any ideas?

Topiramate: Topiramate has been studied and there is an average of 23 pounds of weight lost with it. Your psychiatrist is certainly familiar with this. Ask if it would be an option for you. Best wishes.

Habit change: Is difficult, since humans are wired to resist change. However, the best way to address your weight gain is gradual change of diet and increasing exercise. You could work with a health coach, a nutritionist, or a trainer to help you. Accountability is key. Weight watchers is another effective resource, and low cost as well. Don't give up -- and you don't have to do this alone!