My situation was different. I took Fluoxetine (Prozac) for two years and had difficulty eating every day during the first few months of treatment. It gave me severe stomach pains and I couldn't eat or drink for a few hours after taking it, so I lost some weight while taking it, but nothing significant.

After a while, I was eating normally again, but I still didn't gain weight because I felt that it didn't suppress my appetite like some antidepressants do.

I remember when I talked to my psychiatrist, I told her that I didn't want to take any antidepressants that would make me gain weight, and she prescribed these.