Prohormonecontaining

Prohormone-containing, sometimes written as prohormone-containing, is a descriptor applied to substances, supplements, or products that include prohormones, which are chemical precursors to active hormones. When ingested, prohormones can be converted by metabolic pathways into active steroid hormones in the body.

As a class, prohormones were marketed in the past primarily for performance enhancement, muscle growth, and athletic recovery. The potency and safety of these compounds vary, and their conversion to hormones can lead to substantial hormonal changes with individual differences in metabolism.

Regulation and legality vary by country. In the United States, many prohormones were moved from dietary supplements to controlled substances or prohibited from sale as dietary supplements in the mid-2000s, leading to a decline in prohormone-containing products. Other jurisdictions maintain different controls, including scheduling or outright bans.

Safety concerns include disruptions to the endocrine system, liver and cardiovascular stress, lipid changes, elevated blood pressure, and side effects such as acne, hair loss, gynecomastia in men, and virilization in women. Adolescents and individuals with preexisting conditions are at particular risk. Some prohormones have legitimate pharmaceutical or research applications under medical supervision, but over-the-counter products are often regulated or prohibited.

In sports, prohormone-containing substances are generally banned by major organizations such as the World Anti-Doping Agency, and testing policies routinely screen for prohormone metabolites.

Due to regulatory restrictions and safety concerns, prohormone-containing products are rarely marketed as dietary supplements in many jurisdictions, and consumers should exercise caution and seek medical advice before use.