Hello, Thanks for query, The drug is the same whether it is Adderall b973 or Adderall cor135 or generic. It is a combination of amphetamine salts that are strictly regulated by the FDA. In order for a company to produce a generic form of the drug, it has to pass a plethora of tests and scrutiny before it is allowed to be put on the market. It is possible that there are some slight differences in the inactive ingredients of the tablets, but the drug itself has to be equivalent to the original. A lot of people claim that brands work better than generics, but this would be considered a psychosomatic response. In other words, they believe it works better, and so it does. Hope this will answer your query, Thank you.