Performance-enhancing substance

Performance-enhancing substances (PES, or “performance-enhancing drugs” / PED) are pharmacological agents used to improve athletic performance beyond what training, diet, and recovery alone can produce. The term is broad: it encompasses anabolic and androgenic agents, peptide hormones, stimulants, diuretics used as masking agents, oxygen carriers, and metabolic modulators.

Regulatory definition

In tested sport, the operational definition is whatever appears on the WADA prohibited list at any given time. The list is updated annually and is the basis for anti-doping rule violations under the WADA Code.

Categories

The most relevant categories for peptide users are:

• Anabolic agents (anabolic steroids, SARMs)
• Peptide hormones and growth factors (growth hormone, IGF-1, GH secretagogues)
• Hormone and metabolic modulators

Distinction from supplements

The boundary between a supplement and a performance-enhancing substance is not bright. Caffeine, for instance, has been on and off the WADA list depending on era. Creatine has never been prohibited despite measurable ergogenic effect. The relevant question for Retapedia’s “natty” verdict is whether the substance is currently listed by WADA or banned by a relevant natural-bodybuilding federation, not the size of its measured performance benefit.

Therapeutic use

Use under a Therapeutic Use Exemption does not change a substance’s classification as performance-enhancing — it only authorises the individual athlete to use it medically.