ATTENTION Parents of boys who took Risperdal - A medication for the treatment of ADHD, Autism, and Bipolar Disorder has been linked to Gynecomastia, a medical condition in which boys develop female breasts. If your son has taken Risperdal and developed gynecomastia, has developed female breasts, has had breast removal surgery or has lactated, call 1-800-BAD-DRUG today. Your family may be entitled to significant compensation. Some claims have already settled.