Former Richmond defender Travis Casserly will remain barred from playing football at any level until the end of 2012 after his appeal against a doping offence was dismissed on Friday.

Casserly, who was on the Tigers' AFL list between 2006-08, was suspended for the 2011 and 2012 seasons after testing positive to restricted substance pseudoephedrine following last year's WAFL grand final win by Swan Districts.

The 24-year-old, who was a chance to regain his spot on Richmond's list earlier this year via the rookie draft before being handed the penalty, challenged the severity of the ban, which was the maximum he could receive.

Casserly argued he had taken two Sudafed tablets during the grand final to merely treat a bout of hay fever.

But the WAFL Appeals Panel dismissed Casserly's appeal, declaring the original decision by WAFL Tribunal Chairman Paul Heaney "was not erroneous or unreasonable given the evidence".

"Under the Australian Football League Anti-Doping Code if a player uses pseudoephedrine there is a mandatory two year disqualification unless he shows that he did not use it to enhance his performance," the WAFL said in a statement.

"After hearing evidence, the Tribunal was not satisfied that Casserly did not use it to enhance his performance and found that he did. It then imposed the mandatory disqualification of two years."

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