"since 2007, i&#039;ve taken lexapro in varying doses from 10 - 40 mg. now 2017, i believe it no longer worked as it once did. my psychiatrist had mentioned celexa to me, explaining it&#039;s basically the same compound construction but one molecule. i  have marked depression, but also suffer from stress, anxiety, post-traumatic stress, some ocd tendencies, adhd &amp; sleep issues. i have been on 20 mg of this, celexa, now for over a week and immediately, within 2-3 days, felt the difference, in a great way! my body is extremely sensitive to certain types of psych meds. my body also metabolizes medications differently from season to season. i believe at the right dose of this, celexa, i will be able to come off of the 2mg of clonazepam. give it time!"