"this medication was god awful to me. i was on lexapro for 3 years when they suddenly switched me to effexor while slowly weaning me of the lexapro. the first few days were hell. i couldn&#039;t sleep for more than a few hours each night and became irritable and physically ill because of it. when i finally did sleep and wake up i had one of the worst panic attacks i&#039;ve ever experienced in my life. it was to the point where my family and i were afraid i would need to be hospitalized. i will never ever take this drug again. i had only been taking it for 3 weeks when i had the horrible panic attack, the worst one i&#039;ve ever experimeced and which the meds were supposed to be helping me with, and i am back on 20 mg of lexapro."