The sports tribunal has suspended veteran cyclist Mark Spessot for two years for the presence of two prohibited substances in a sample.
Mr Spessot tested positive for prednisone and terbutaline after September's Twizel to Timaru cycling race.
The substances were taken by Mr Spessot in the two days before the race for genuine medical reasons and not to enhance sport performance.
Mr Spessot was provisionally suspended on December 23; the two-year ban has been backdated to September 19, the day of his event.
The Tribunal accepted Mr Spessot's evidence that the substances had been taken to relieve the symptoms of longstanding asthma.