MMAWeekly Radio just broke news that ‘The Ultimate Fighter’ star Stephan Bonnar has tested positive to a banned substance.
Bonnar’s post-fight urine test showed that he had Boldenone Metabolite in his system.
Boldenone is an anabolic steroid that is intended for use only by veterinarians, specifically to help rehabilitate injured horses. It has several brand names for veterinary use, including Equigan, Equipoise, Ultragan, and Ganabol. It is on the banned substances list of all the major athletic commissions and sports leagues.