"I received a doctor's prescription for Adderall prior to signing with the Giants," Hill said. "Shortly after signing with the team, I was in a meeting with (director of player development) Charles Way, who reviewed the list of the league's banned substances. I knew at that point that this may be an issue.
"I was tested and the results came back that Adderall was in my system. I appealed but lost the appeal. I accept full responsibility for this situation, and it won't happen again. The Giants have given me a great opportunity when nobody else would, and I don't take that for granted. I feel badly this has happened. I will work hard and stay in great shape these next four weeks so I can come back and contribute to this team after my suspension."
Hill signed with the Giants as a free agent in May. Considered a top prospect during his days at Florida, Hill went undrafted in 2011 after scaring off teams with a combination of his arrest record, his suspension as a member of the Gators and his wildly colorful Twitter account that raised the eyebrows of potential future employers.
Follow Marc Sessler on Twitter @MarcSesslerNFL.