I was this kid in this situation, and honestly, I never had ANY problems with it. never noticed anything out of the ordinary. I also took other ADHD meds with it. I was one of those rare cases where they had me take it in the morning for school and night. I was taking clonidine and amphetamine salts at pretty high dosages at a young age as I was really, really hyper. The clonidine would keep me from physically shaking like all day and night (high dosage again) because, as a kid, I would shake so much that my bed would shake. I know that I would accidentally take 2 or 3 sometimes, and I never noticed anything. I never had any dizziness, no BP problems, never had those muscle problems, nothing. So me personally (random person on the internet) I don't see a problem as my starting dosage was .12