This is a very new generic made by Mallinckrodt.
Description: White to cream colored octagon shaped tablet
Identification Code: Debossed with a "20" and a partial quadrisect on one side and a "M" within a box on the other side
Dextroamphetamine Saccharate,
Amphetamine Aspartate, Dextroamphetamine Sulfate, Amphetamine Sulfate Tablets (Mixed Salts of a Single Entity Amphetamine Product) CII 20 mg
You can find a picture and the prescribing leaflet at mallinckrodt.com
More info:
http://Adderall.drugs.com/
I'm not a pharmacist or a medical doctor. This message is not medical advice, nor is at an offer to provide medical advice. All drug identifications should be validated by a licensed MD or pharmacist.