I was on Celexa for 5 wks & I gained 14.7 lbs so ystrdy my dr gave me a sample back for Viibryd. After reading some comments I'm quite worried about weight gain! I have a rare thyroid disease & my weight changes every 3 yrs (seriously). I lost about 90lbs since Dec 2009 & really need to take off that 15lbs. Don't need/want any weight gain!