"been off and on lexapro for 4 years now. i dread having to go back on it as the side effects make me feel lousy - headaches, nausea, jittery, insomnia, lightheaded and anxious. after a week though i feel back to normal and my energy and love for life returns. being a person who prefers not to take medication i know that sometimes you can fight too long before you need a helping hand - lexapro helped me. if you do get side effects at the beginning i advise you to go with the flow, understand that it&#039;s the medication working &amp; think positive - take care to you all."