Steroids Allegedly Used by Barry Bonds

Updated August 5, 2020 | Infoplease Staff

As detailed in Game of Shadows by Mark Fainaru-Wasa and Lance Williams

by Mark Zurlo

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In their book Game of Shadows, Mark Fainaru-Wasa and Lance Williams allege that Barry Bonds used a number of different steroids in his pursuit of the all-time homerun record, ranging from common steroids used by many bodybuilders to designer steroids specially created for Bonds to be undetectable in tests. Bonds was indicted on five felony charges in November 2007. These charges, the result of a four-year federal investigation, include perjury and obstruction of justice. The indictment says the government can prove that blood seized in a 2003 raid of the Bay Area Laboratory Co-Operative and tested positive for steroids belonged to Bonds.

Winstrol (Stanozolol)
Following the 1998 season, Winstrol was the first steroid Bonds allegedly used. It is popular with bodybuilders, but Bonds felt inflexible and had trouble with shoulder tendons while on the drug. It is best known to have been used by disgraced Canadian sprinter Ben Johnson.
Also popular with bodybuilders, Bonds reportedly used the drug in injection form. It is often used to treat anemia.
Human Growth Hormone (HGH)
According to Game of Shadows, Bonds used HGH, an undetectable steroid, as a cocktail with a number of other performance-enhancers. HGH is known to strengthen joints and tissue, and allowed Bonds to maintain muscle without any heavy lifting during the season.
The Cream
A testosterone-based substance reportedly given to Bonds by Victor Conte, founder of the Bay Area Lab Co-Operative (BALCO).
The Clear (Norbolethone or THG)
Also reportedly supplied by Conte, the Clear was used by many of the world's top Olympic sprinters, including former 100-meter world record-holder Tim Montgomery. The drug was developed for medical reasons during the 1960's but never mass produced because of safety concerns.
Known to increase the effectiveness of using HGH
Also known as "Mexican beans," these steriods take effect and leave the user's body quickly.
Steroid normally used to improve the muscle quality of beef cattle.
Bonds allegedly used this drug, prescribed to women for infertility, to regain the ability to produce natural testosterone. Bonds often ignored his trainer's advice to take time off between cycles to allow this process to occur naturally.

Source: Game of Shadows by Mark Fainaru-Wasa and Lance Williams

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