Question

what is prohibited substance?

Answer 1

Prohibited substances and methods. Some drugs, medications and substances are banned in sport, as are some methods. Athletes competing in sports governed by a World Anti-Doping Code compliant anti-doping policy need to be aware that they can't just take any drug or medication, or even use certain methods.
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Answer 2

a n s w e r :-

prohibited substance in British English

(prəʊˈhɪbɪtɪd ˈsʌbstəns) a substance, such as a drug, etc, that is banned or forbidden by law or other authority.

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