mix of d-amphetamine and l-amphetamine. the l-amphetamine is the bad news one that causes negative side effects in my opinion. vyvanse almost completely rid the l-amphetamine and was good for me for a while but now i have daytrana .... "methylphenidate" AKA, ritalin patch. is good for me in duration, smooth delivery, and efficacy. i even halfed my dose after 2 months. LOW LOW potential for abuse in my opinion (from someone who knows what they are talking about). Anyway, hope i helped !
.......... ms1