OL Bruce Campbell, who played 15 games for the Argos in 2015 and is now a Roughrider, has been suspended for two games because he tested positive for ibutamoren (https://en.wikipedia.org/wiki/Ibutamoren).
Both Campbell and Rider HC Jones released the typical statements that follow such positive drug tests.

Players who test positive will face a two-game suspension for a first doping violation, a nine-game suspension for a second violation, a one-year suspension for a third violation and a lifetime ban for a fourth violation.
http://3downnation.com/2018/01/16/riders-offensive-lineman-bruce-campbell-suspended-two-games-positive-drug-test/


Statement from Bruce Campbell:
First, I would like to apologize to the Saskatchewan Roughriders organization and my teammates for putting them in this position. I’d also like to apologize to Rider fans and fans across the league. I take full responsibility for my actions and ensure you it will not happen again.
I accept the Canadian Football League decision and will not be appealing the two-game suspension.

Statement from Riders General Manager and Head Coach Chris Jones:
As an organization, we fully support the CFL and CFLPA policy to prevent the use of performance enhancing drugs. We are disappointed to learn that a member of our team has committed a violation. We have spoken with Bruce and he has taken ownership of his decision and realizes the impact of this violation.
http://3downnation.com/2018/01/16/ri...ive-drug-test/