a 30 mg-strength Vyvanse capsule is molecularly equivalent to 8.844 mg dextroamphetamine base. However, this molecular equivalence would only hold true as a bioequivalence ratio if lisdexamfetamine's salt , dimesylate, was instantly dissolved resulting in the complete dissociation of lisdexamfetamine ions, and then the covalent amide bond of every lisdexamfetamine immediately underwent hydrolysis