Compare the drugs Vynase to Intuniv- VS Adderal XR( I know that Adderal XR is a stimulant drug) Please advise as my son has been on Adderal XR since age 5 now 12, how long can a stimulant drug be used? Without Adderal XR his life is miserable for him ( I do not care about myself but what is best for the child) although he it better able to control impulse activity ,hyperactivity and aggressiveness but when medication wears off life get hard to manage. He is 12 years old and 4feet 5 inches and 75 pounds I know that the Addreal Xr has some of the affects of not eating but Endocrinenologists state that it does not interfer with growth? True or False? As he is a least 2 feet smaller than his peers?