Miguel Tejada has been suspended 105 games after testing positive for an amphetamine in violation of Major League Baseball's drug program.
The suspension is effective immediately.
"I admitted I made a mistake. But I want people to understand one thing: I wasn't using a drug to take advantage on the field, or be stronger or hit more home runs," Tejada said.
"I've been using it [Adderall] for the past five years and had medical permission from MLB. But my last permit expired on April 15 and they didn't gave me another. I knew that I was in risk of breaking the rules, but at the same time, I could not stop using the medicine because I suffer from ADD [Attention Deficit Disorder]. It's not a vice, it is a disease."