Hamilton midfielder Simon Mensing has served a four-week suspension following an anti-doping rule violation, UK Anti-Doping have confirmed.
The 28-year-old tested positive for the stimulant methylhexaneamine last month.
A statement issued by the Scottish Football Association on Monday read: "UK Anti-Doping (UKAD) have confirmed an anti-doping rule violation involving the Hamilton Academical player, Simon Mensing."
The statement continued: "UKAD have confirmed 'the presence of a prohibited substance or its metabolites or markers' in a sample collected from the player on December 29, 2010.
"The stimulant methylhexaneamine (MHA) was detected in the player's sample, following which a four-week period of ineligibility was imposed on him, starting January 29, 2011, at 0900 and concluding on February 26, 2011, at 0900."
UKAD confirmed the violation on their website and Mensing issued his own response on Monday.
A statement issued on Mensing's behalf read: "Simon used the dietary supplement from September last year which clearly states it contains no banned substances.
"It is freely available from high street retailers.
"Simon sought advice from two different retailers and his club and it appeared there was no banned substance contained in the supplement."