Lexapro (escitalopram) is one of the most prescribed antidepressants worldwide, but most people only know the basics about it. This article takes a deep look at what Lexapro does, how it works in the brain, what side effects you might expect, and what nobody tells you when you start. Learn about success rates, real-life stories, how to talk to your doctor, and tips for making Lexapro work better for you.