"i have been taking risperidone for over four years now. i felt great the first year but had to constantly have my dosage increased. i don&#039;t like some of the side effects (anxiety, difficulty concentrating, weight gain, faster heart rate, flu-like symptoms) but have learned to deal with them. once you start to gain weight it is virtually impossible to lose the weight as i have tried everything. it seems you peak at a certain level."