To answer your question I believe that ED's should be marketed to 21 and over. When marketing their is always bleed over to other demos and ages therefore marketing to 18 year olds bleeds over into younger demos. A healthy kid should not need any supplemental energy. Their bodies are peaking in Growth Hormone and their natural testosterone is climbing providing the catalyst for effecient energy production at the cellular level.
ED's are for adults whose bodies are not as effective at metabolism and ATP production for energy anymore.
By providing kids under 18 ED's your are depriving them of the ability to create a state of healthy growing. Anything you introduce into the body to supplement/foster the production of a function allows the body to decrease its responsibility to continue that function because it recognizes the foreign substance as a false substitute of its own endogenous process or source.
Whether you think can or think you can\'t, you\'re probably right!