"warning - be prepared for withdrawal symptoms when you stop belviq! i tried belviq months ago but got nervous about the initial headaches and stopped after 3 weeks.  i had 2 evenings of &quot;palpitations&quot; and one horrible anxiety filled night with desperate thoughts. i got through it and rationalized starting again 3 months later when i realized belviq really did a good job of preventing &quot;cravings&quot; and my tendency toward night eating. after 12  weeks and &quot;fair&quot; weight loss, i decided the recent cognitive and vision side effects were not worth risk of continuing. withdrawal day 3 tonight. i should be on episode of celebrity rehab...horrific thoughts, anxiety, insomnia - want to peel my skin off. brutal...hoping this is the worst of it. good luck."