Cocaine is a stimulant which is more commonly used as a recreational drug than for performance enhancement.

Amphetamine is a psychoactive substance that stimulates the central nervous system. It creates a feeling of cheerfulness, strength and lightness, even in people in a state of severe physical exhaustion ....

Glucocorticosteroids are anti-inflammatory steroid hormones produced in the adrenal glands. Examples are hydrocortisone, prednisolone and prednisone.

Cannabinoids are a compound contained in the marijuana plant and its products. The cannabinoid compound contains a substance called tetrahydrocannabinol which has psychoactive properties.

Narcotics are derived from the opium poppy and include the commonly known painkillers morphine, diamorphine and pethidine.

Stimulants are psychoactive substances which induce temporary rises in either mental or physical function or both.