Lexapro tablets are film-coated, round tablets containing Escitalopram oxalate in strengths equivalent to 5 mg. Lexapro is actually an updated version of an older anti-depressant called Celexa. There is a serious condition that, if left untreated, can cause major problems in your life. If left untreated, can cause major problems in your life. If left untreated, can cause major problems in your life. Depression and generalized anxiety disorder.