My own child has both ADHD and ASD and he really struggled with medication. It lost effectiveness. He’d have rare and serious side effects, or he’d perseverate too much and get compulsively stuck on things. Ultimately, at age 16 we stopped stimulant medication and he does better without it. A couple therapists told me that individuals with ASD are often super sensitive to near-meds.
ADDitude Community Moderator, Parenting ADHD Trainer & Author, Mom to teen w/ ADHD, LDs, and autism