"i take lexapro 20mg once daily and 5mg (for now) three times daily. the first week i didn&#039;t notice much at all.. but now that i&#039;ve been taking it for over a week i am starting to notice it&#039;s effects. most notably when i let it dissolve under my tongue. this medication has no notable side effects. only downside is its mildly underpowered. to me, lexapro is the work horse, and buspar is a helper."