Can anyone tell me their experience with Lexapro or desvenlafaxine? When you start taking it, what are the symptoms. I know that you have to take it for quite a while before it becomes therapeutic, but how do you get through the jitters and other side effects before it finally kicks in and how long if anyone has been on Lexapro or the other or any of the others, did you have hardly no side affects, a lot of side affects. I was just recently prescribed Lexapro 1/2 taken for 7 days and then a full 10 mg taken for the rest of the time. I am so scared to try a new medicine as I've been on Mirtapazine - when I started on Mirtapazine, almost 20 years ago, the affects were almost immediate, I am talking about two days. No side effects, except I was hungry all the time, no jitters, no trembling, nothing, but I believe it is no longer working thus the reason she is having me try Lexapro. I think I am just very very sensitive to any of these SSRI's or SNRI's as I do not see many comments on any website about when you start taking them..