The league never makes public what substances athletes test
positive for but the Denver Post reported it was the banned
stimulant Adderall, a drug prescribed to treat Attention Deficit
Hyperactivity Disorder (ADHD).
The news comes just five days before the Broncos, who lost last
season's Super Bowl, begin their season with a home game against the
"Tonight's news regarding Wes is very disappointing for our team,
but we understand the league's authority in this area," Denver coach
John Fox said on the team's official website.
"I have no doubt that Wes will remain focused on his preparations
for the season and stay in excellent shape during his time away from
In an email to the Post, Welker said he was "as shocked as everyone"
and would fight to clear his name.
"I would NEVER knowingly take a substance to gain a competitive
advantage in any way," he said.
"I have never been concerned with the league's performance enhancing
or drug abuse policies because under no scenario would they ever
apply to me.
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"But I now know that (drug-policy procedures) are clearly flawed,
and I will do everything in my power to ensure they are corrected,
so other individuals and teams aren't negatively affected so rashly
Welker, who has been to the Pro Bowl five times, is a key receiver
for Denver quarterback Peyton Manning and made 778 yards on 73
receptions last year.
(Reporting By Andrew Both in Cary, North Carolina, editing by Nick
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