The doping classes that are banned are: Stimulants Narcotic Analgesics Anabolic Steroids Diuretics Peptide Hormones and Analogues Some other classes of drugs are also banned by International Federations of sport because they could be performance enhancing in that particular sport or a risk to the athlete´s health. For example, beta blockers are prohibited in Archery, because they could enhance performance by slowing down the heart rate, but they are not prohibited in Athletics. Alcohol is tested for in some sports, motor sports for example, because alcohol poses a threat to all drivers.