Google is your friend (she says, some time later, possibly precluding the response that the anonymouse will even see this).
ADHD medication is generally stimulants, commonly some variation on the them of amphetamine salts. Don't let that scare you, if you actually have AD(H)D (for which you should get a proper diagnosis by a specialist). Because of the nature of the different neurology of people with these disorders, amphetamines don't quite have the same effect on us as they do on "normal" people - I take amphetamines, and they just make me calm and help me concentrate.