Can professional athletes take Adderall?

It is illegal without a prescription and is banned by the NFL, MLB, NBA, and the NCAA. Athletes in other leagues can use Adderall by being granted therapeutic use exemptions, but the leagues say it is a misconception that any player with a prescription qualifies for an exemption.

Does Adderall increase performance?

Adderall didn't affect performance on all tasks, but on the tests in which it did have an effect, it seemed to help those who were low-performing. However, people who had performed well on the test without taking stimulants showed either no change or did worse while taking Adderall