Hi, I take lex too. I started with 10mg, but actually I couldn't sleep well.....so I have temazepam for that and take Lex in the morning. No stomache upset for me. It took over 3 weeks for me to notice anything more than having NO appetite. After my anxiety wasn't releived AT ALL I went up to 20 mg and have felt WAAAAAYYYYY better with the anxiety. I felt a noticable difference on the 20 mg dose after 1 an 1/2 weeks!

I guess, if your side effects aren't bad with lex, keep the dose going and after a week or two more, if you don't feel relief, tell your doc and they will probably up you to 20mg.

The only effects I ever felt:
diarrhea (for like two weeks)
no appetite (for three weeks--bummer, that's over)
kinda wiry if I took at night (switched to morning and a sleep aid)

At 20 mg, I think I'm where I need to be. Everyone is deifferent but lex is usually well tolerated so maybe give it a bit longer.