'Doping' refers to an athlete's use of prohibited drugs or methods to improve training and sporting results. Steroids are the drugs that often come to mind when we talk about doping, but doping also includes an athlete's use of other forbidden drugs (such as stimulants, hormones, diuretics, narcotics and marijuana), use of forbidden methods (such as blood transfusions or gene doping), and even the refusal to take a drug test or an attempt to tamper with doping controls.

Prohibited substances are:

Stimulants directly affect the central nervous system, increasing blood flow and heart rate. 

Narcotic analgesics decrease the sensation of serious injuries, allowing athletes to continue training for competition after serious injuries.

• The cannabis products include marijuana and hashish.

Glucocorticoids are a class of corticosteroids that affect the  metabolism  of carbohydrates, fat, and proteins, and regulate glycogen and blood pressure levels.  

National Anti Doping Agency (NADA) was set up as registered society under the Societies Registration Act of 1890 on November 24, 2005 with a mandate for Dope free sports in India. The primary objectives are to implement anti-doping rules as per WADA code, regulate dope control programme, to promote education and research and creating awareness about doping and its ill effects.