its been well researched and studied to use to counter act the weight gain caused by APs and Anti depressants.

I would say it will get rid of cravings. And it also takes the sugar out of your liver before it has a chance to turn into fat.

So that way prevents any new weight gain from APs or anti depressants.

Topamax I believe does more to help you lose weight where as metformin just helps to prevent new weight gain.