What is the most common antidepressant that doesn't make people gain weight

Good question: This is a complicated subject, because weight gain can be affected by: 1) things that cause depression [a thyroid problem or excessive alcohol use], 2) recovery from depression [increasing appetite], 3) poor diet [the average american gains 1 pound per year], 4) antidepressant side effects. Here's a good reference: http://www.Webmd.Com/depression/features/antidepressants-weight-gain.

Wellbutrin (bupropion): Wellbutrin, (bupropion) most likely -- and Lexapro is supposed to be more weight neutral also. I have known people who even lost weight on that one.