Former Cleveland Browns wide receiver Antonio Callaway's appeal of his 10-game suspension for violating the NFL’s substance-abuse policy was denied according to Adam Schefter of ESPN.

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Callaway's agent, Malki Kawa tweeted that he was facing the suspension for taking a tainted CBD supplement.

“I stand by (Antonio Callaway) and know first hand all the improvements he's made in his life,” Kawa tweeted. “The fact that a tainted cbd supplement is responsible for a 10game suspension is unfortunate and hopefully the @NFLPA will be able to fix this in the new cba.”

After the suspension was upheld, Kawa tweeted again that they proved to the NFL the supplement was tainted, but the NFL still decided to stick with their initial decision.

This is the second time that Callaway has been suspended under the NFL's substance-abuse policy. He tested positive for marijuana at the 2018 NFL scouting combine and was also cited for having marijuana in his car last August.

Last season general manager John Dorsey said the team would stand behind him as long as he was “committed to taking advantage of the resources made available to him by our club and the league to help him become the best version of himself as a person first and foremost.”

Last week the Browns deactivated Callaway because he was late for the game and after the suspension was announced the team released him.

Hopefully, Callaway can get his life off the field on track because when he is on the field he has proven to be an NFL talent.