Escitalopram or Lexapro is an effective medicine that is used for the treatment of major depressive disorder. Lexapro is related with the group of medications called selective serotonin reuptake inhibitors (SSRIs). This medication is helpful for the treatment of depression and generalized anxiety disorder. It effectively works by growing the levels of a neurotransmitter called serotonin in the brain. An increased serotonin level gives the ability to improve mood. Due to its various benefits, many doctors suggest to try Lexapro. This medicine will not give you instant result. The full effect can be seen after 2-3 weeks of treatment.