Stephan Bonnar and Josh Barnett , mixed martial arts (MMA) fighters from the UFC and PRIDE Fighting Championships , have also tested positive for the banned substance.  After the World Extreme Cagefighting show on January 20, 2006 Muay Thai turned MMA fighter Kit Cope also tested positive for boldenone.  Following the Strikeforce card on June 22, 2007 former PRIDE and UFC fighter Phil Baroni tested positive for boldenone, as well as stanozolol .  At a K-1 WGP event in Las Vegas on August 17, 2007 two fighters, Rickard Nordstrand and Zabit Samedov , both tested positive for boldenone.  Alexandre Franca Nogueira tested positive for boldenone in July 2008. 
The Stanozolol hormone can be one of the few anabolic androgenic steroids women can use safely; while it is not the absolute mildest in nature for a woman it is up high on the list. Issues regarding the steroids hepatic nature as well as its effects on lipid profiles remain the same with women but the female athlete must also necessarily be aware of virilization. For the female athlete, the Winstrol side effects revolving around virilization will be the most concerning as such effects can destroy a womans femininity. Common virilization effects include a deepening of the vocal chords, body-hair growth and enlargement of the clitoris. The majority of women who supplement with the Stanozolol hormone, if they keep the dose low and use for very short periods will be fine. If you are a female Winstrol user and you begin to notice virilization symptoms simply discontinue use and you will be fine; nothing will change. It is when the symptoms are ignored, use is continued and the symptoms are allowed to set in that many women develop a problem; remember, man or woman responsible use is always your best friend.