You're confused on some basic science. Lisdexamfetamine (Vyvanse) is a lysine molecule bonded to a Dexedrine molecule. An equivalent dose of Lisdexamfetamine w

You're confused on some basic science. Lisdexamfetamine (Vyvanse) is a lysine molecule bonded to a Dexedrine molecule. An equivalent dose of Lisdexamfetamine weighs twice as much (263.38 g/mol) as dextroamphetamine (135.21 g/mol) Additionally, the body needs to digest the lysine before the dexedrine can cross the blood brain barrier. That slows down absorption, and means an equivalent dose has a lower peak concentration in the body, too. So your 'monstrous' 70mg Vyvanse example is actually 35mg of amphetamine, dosed over several hours. anyway, your point stands! only wanted to offer so pointers on your supporting info. If you want to talk about monstrous doses, look into "Mydayis"