I was just prescribed lexapro for long term low level depression. The problem is I don't realize I'm depressed until I'm coming out of it a month later! I took 10 mgs the first day and was really fatigued but couldn't sleep either which didn't help. It killed my concentration at work, so the second day I took a half a pill and felt much better and today I took none. Should I switch to tryptophan supplements instead and how long should I wait to avoid serotonin syndrome? Thank you!