"Is Ritalin causing my grandson's stuttering? It started a year after he began medication."
Larry Silver, M.D.
Speech dysfluency (stuttering) is not a side effect often seen with Ritalin. Also, since the stuttering started a year after being on Ritalin, I doubt if this medication caused the stuttering. It would be my suspicion that the stuttering is a separate problem not related to the Ritalin.
I hope your grandson is seeing a speech-language therapist to help him with his stuttering. If there is any doubt about the impact of Ritalin on stuttering, it would be easy to stop the Ritalin and see if the stuttering stops.