- I have been on Lexapro for years, and stopped taking it cold turkey about a week ago? (really because my script ran out, and I couldn't get in to the doc... and I really don't want to be on it anyway). I also take welbutrin, and I am still taking that. I was fine for the first few days, but have started having horrible night sweats, like I have to change clothes three to four times a night, and I feel like I have a hangover all the time. Just a little delayed I guess, I don't know how to describe it. I have read that fish oil will help, and I am going to get that. I just want to know how long this is going to last. Is it going to last longer because I have been on it for so long? I have read that most people are fine after a month... HELP!