"I think the proof that I actually needed the medication was actually going through all the tests and all the protocol to make sure I was ADHD and to find a solution for that," Davis said. "I think, for me, that was the biggest weight off my shoulders, knowing that, 'OK, this is a condition I have. It hasn't changed with age.' And using the Vyvanse, it's a little more sophisticated [of] a drug. It's something I've really enjoyed, the differences between that and Adderall."