I found the messages about Lexapro boosting immune systme very interesting. I started taking Lexapro late in Jan. and have been doing so much better. I am even getting a little stamina and able to do so much more. My problem is that I have more trouble sleeping now. I don't think it is due to the lexapro, but would like to know the best time of day to take it. I have been taking it in the morning. Would it be better to take it at bedtime? I also think part of my improvement is from taking "Nystatin" capsules from FCC in Dallas, and Threelac recommended by Stormyskye on this message board.