"the first week on the pill was terrible. i had bad headaches and general sick to the stomach feeling, then it subsided. i was never hungry the whole time but so tired. this pill made me feel drained sun up to sun down. i couldn&#039;t bring myself to exercise the way i wanted because of the fatigue. i didn&#039;t continue belviq after the first month due to the tired feeling. i&#039;m sure i could have lost much more weight if not for the fatigue."