"started belviq 5 days ago. i am incredibly drained and exhausted. have had headaches, issues with balance, feeling of not connecting to my own thoughts or words, eating more, gained 3 pounds... and today the exhaustion was so bad i feel asleep behind the wheel of my car twice on a short trip to my grandparents house. i left a message with my doctor&#039;s office and will follow up tomorrow. take the side effects seriously. i have never had issues like this with a medication."