Growth retardation has been shown to be a brief problem for some children but all children seem to catch up with time. Most side effects can be managed with dosing amounts and timing. All side effects decrease with time. If your child takes medication try and avoid sending the medication to school. I think it is unfortunate when a child has to be singled out daily as needing medication because they are hyperactive.
Most children can be properly medication with time release medications.
This is also a plus for the teachers who have to dole out these controlled substances with great care.