"My nine-year-old has oppositional defiant disorder, and he just started taking Risperdal. I heard that this medication could cause weight gain or even diabetes. Should I take him off it?"
Larry Silver, M.D.
Risperdal can cause an increase in appetite. This increase, and the resulting weight gain, is often significant enough to require a different medication. Risperdal can also impact endocrine systems, with a possible outcome of Type 2 diabetes. When a doctor prescribes Risperdal for a child, he should conduct several laboratory tests soon after starting the medication, and again every several months, to check for this possibility. Be sure to discuss this concern with your prescribing doctor.