major depressive disorde
"At first sertraline made me worse, more depressed, insomnia, stomach pains, nausea, headaches, but after a few weeks I felt a lot of my depression going away, however it's taken a lot of dose increases to get to a comfortable level where it works on my depression, 4 months later and I  finally feel like myself again. 
would recommend even though the side effects are kinda rough"