"i am 18 years old and have only been on sertraline for 3 weeks so far but over the last 2 weeks i have seen a drastic improvement in my mood, and anxiety does not have nearly as bad effect on me as it did before. i used to take citalopram which i just found made me worse, my mood was more irratic, i gained lots of weight and became suicidal. that is why my doctor changed the medication putting me on a 100mg of sertraline. it has done me the world of good i would never go back. also it has really decreased my appetite significantly, i can easily get by on one meal a day and have already lost 11lb of the weight i gained on citalopram."