I had my follow-up appointment with my doctor yesterday and told her that I felt better, but still wasn't 100% yet. She said it takes about 6 weeks for the Lexapro to be at it's peak performance. So she gave me the option of trying 10mg and alternating 10mg one day 5mg the next and eventually going to 10 every day or staying at 5mg for a few more weeks to see how I feel. So I decided to try alternating between 10mg and 5mg. I took 10mg last night and haven't noticed any side effects other than what I felt when I first started the medication.....which was slight heartburn/stomach upset, but nothing bad at all. She said she wants me to be on it for at least a year. She was happy I was doing so well. As for the possibility of chemical sensitivity in my work environment, she is going to write a letter to my boss stating that the symptoms I am having could very well be caused by chemical sensitivity and could be eased or eliminated with the installation of a ventilation system. So we'll see what happens there.