Hi Christine,
People differ in how long it takes them to respond to medications, but for me, it really took 6 weeks to begin to see a difference with the morning shakes. I wasn't really in good condition until the 4th month. Yet I've know people who respond by 3 weeks.
My doc told me that Lexapro is closest in its chemistry to Zoloft, but has fewest side effects of all SSRI's. I haven't had any problems on it, but again, we're all different!
The morning shakes are hell- I so understand what you're going through!
Hang in there - it's going to pass!
Jacquie
P.S. Meryl, you're already a wise "young" girl!!