Adderall is a mixture of 4 different isomers of amphetamine. Honestly, I dont recommend anyone getting started on this medication. It is extremely strong, highly addictive, and you will become dependent, that is a guarantee. Most likely you wont be able to play poker without it. I have counseled many people who became dependent on this drug and they do say that the most boring activities become interesting, however the information they learned did not last long term. Also if you get caught w/o a prescription you will, depending on were you get caught, the authorities will have a field day with you. Ive seen it. Trust me its not worth it.
Ryan--im a pharmacist