One week of lexapro, (escitalopram) muscle twitches in left arm and calf muscles, headache, and stomach pain. do i need to see dr. or keep tolerating side effects?

More to it: Give it a little more time and see if the side effects diminish. If not, talk to your doc about trying a different med. However, understand that medication alone is not optimal treatment for depression (if that is what you are treating). For most depressed patients, the benefits of meds are indistinguishable from placebo. Good treatment for depression is psychotherapy (with or without meds).