i saw a site that actually advertises a pill u can take that will guarantee you will grow 2-4 inches in height in 60 days. c'mon now! ain't it impossible once you reach a certain age for this to happen at all? doesn't your body and genetics automatically determine the height you will be once u reach between 20-25 years old? yet, they had some 36 year old guy claiming hew grew 3 inches in height being on this pill. any experts out there who actually back this up?! 
arginine + leucine has effects on GH, your body goes through endochondral ossification in which hyline cartalige is ossified(by bone) at the epiphyseal plate. At a certain age the epiphyseal plates completely ossifiy such that no further growth can occur, maybe under extreme circumstances, such as pituatary tumor. However, this supplement will not do this if your plates are closed and the majority of cartilage model ossified.
it is physically impossible and this company should be sued, if they claim at any age this could occur, as organs would have to grow in size also.
