The prime advantage of this product is the fact that Testosterone Cypionate can be injected once per week and it gives some very good gains in strength and size. I would bet that many careers in bodybuilding and athletics were built with the long term use of this drug. I’ve used it at doses of 250-2,000 mg per week, and found that the best gains versus side effects are probably had somewhere below the 750 mg/week mark. Of course this is far below what many competitors in the upper ranks of bodybuilding use, but for the average (recreational) bodybuilder or athlete, the side effects above this dose do not constitute an acceptable trade off for the gains.
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. 
Athletes taking Blodenone often report a slow and constant buildup of quality muscle, and certainly this has been my experience with the drug. I would speculate that this slow buildup of muscle is due to the very long ester attached to the Boldenone; Cypionate is a long ester. Thus, we could expect the accumulation of muscle from Boldenone to actually occur at a slightly slower rate than that found with Deca (nandrolone decanoate). This leads me to advise that if you are considering the use of Boldenone, you should consider using it for no less than 8 weeks.