I am about to take my first dose of risperidone. I've had some really bad reactions to many medications in the past, but I haven't given up yet. Researching this med online, I read many comments about significant weight gain - even going from underweight to massively obese. This concerns me greatly for several reasons. One practical reason is that I am in a wheelchair and sometimes need a little assistance. Being petite makes it easier for people to help me. Is there a dosage where the weight gain issue seems to increase?