"Lexapro blocks the re-absorption of serotonin by the first nerve cell. Lexapro tablets are film-coated, round tablets containing Escitalopram oxalate in strengths equivalent to 5 mg. Within days of taking Lexapro you will notice an incredible change in your depression symptoms. Escitalopram helps to restore the brain's chemical balance by increasing the available supply of serotonin, a natural substance in the brain that helps maintain mental balance."