List of doping cases in cycling

Part of a series on
Doping in sport
Substances and types Anabolic steroids Blood doping Gene doping Stem cell doping Mechanical doping Technology doping Cannabinoids Diuretics Painkillers Sedatives Stem cell doping Stimulants Beta2-adrenergic agonist Clenbuterol Ephedrine EPO Human growth hormone Methylhexanamine SARMs Stanozolol Tetrahydrogestrinone
Terminology Abortion doping Biological passport Blood-spinning Doping test Performance-enhancing drugs Repoxygen Stem cell doping Whizzinator
History Olympics Tour de France (1998, 1999, 2007) Auto racing BALCO scandal Clemson University steroid scandal U of South Carolina steroid scandal Dubin Inquiry Association Football China East Germany Russia United States Festina affair Floyd Landis case Game of Shadows Juiced L.A. Confidentiel Lance Armstrong History of allegations Doping case Operación Puerto Operation Aderlass Doping in American football Steroid use in baseball Barry Bonds perjury case Mitchell Report Biogenesis scandal
Doping-related lists Doping cases in Sport Athletics Cycling Doping at the Olympic Games Doping at the World Championships in Athletics Stripped Olympic medals Stripped European Athletics C'ships medals Drugs banned from the Olympics MLB players suspended for doping MLB players in the Mitchell Report
Anti-doping bodies World Anti-Doping Agency International Testing Agency List of national anti-doping organizations Australian Sports Anti-Doping Authority French Anti-Doping Agency National Anti-Doping Agency Russian Anti-Doping Agency UK Anti-Doping United States Anti-Doping Agency
v t e

The following is an incomplete list of doping cases and recurring accusations of doping in professional cycling, where doping means "use of physiological substances or abnormal method to obtain an artificial increase of performance."^[1] It is neither a list of shame nor a list of illegality, as the first laws were not passed until 1965 and their implementation is an ongoing developing process. Thus the list contains doping incidents, those who have tested positive for illegal performance-enhancing drugs, prohibited recreational drugs or have been suspended by a sports governing body for failure to submit to mandatory drug testing. It also contains and clarifies cases where subsequent evidence and explanation has shown the parties to be innocent of illegal practice.

In 1963, the Council of Europe gave the following definition of doping:

"Doping is the administration to a normal subject in any possible way of a foreign agent or abnormal quantities of physiological substances with the sole purpose of increasing artificially and in an unfair manner the performance of the subject participating in a contest."^[2]

The International Olympic Committee slightly modified this, and adopted this definition:

"The administration of or use by a competing athlete of any substance foreign to the body or any physiologic substance taken in abnormal quantity or taken by an abnormal route of entry into the body with the sole intention of increasing in an artificial and unfair manner his/her performance in competition. When necessity demands medical treatment with any substance which, because of its nature, dosage, or application is able to boost the athlete's performance in competition in an artificial and unfair manner, this too is regarded as doping."^[3]