<unk>  supplements The most everyday use of<unk> s is as supplements for muscle growth via ergogenic and anabolic agents.<unk>  supplements became popular from 1960 to 2001 and became used unregulated in Major League Baseball before select<unk> s such as androstenedione and androstenediol became banned in the United States' Anabolic Steroid Control Act of 2004. Many<unk>  supplements that were claimed to impart anabolic or ergogenic effects in men were banned for their poor side effects, commonly in supplements such as in 3β-hydroxy-5α-androst-1-en-17-one, commonly known as 1-testosterone, which are as follows: * Acne * Hair loss * Increased risk of heart disease * Kidney and liver dysfunction * Hypertension * Impotence Many<unk>  supplements such as 1-testosterone were legal in the United States until reclassified as a Schedule III drug in 2005. However, many illegal<unk> s such as 3β-hydroxy-5α-androst-1-en-17-one are currently being sold legally and marketed by brands such as “Advanced Muscle Science” as 1-androsterone and labeled to contain 1-androstenedione-3b-ol,17-one. Only through a recent clinical study has it been shown that the 1-androsterone in the capsules being sold was identified using semi-quantitation and confirmed to be 3β-hydroxy-5α-androst-1-en-17-one. Research surrounding other<unk> s and<unk>  supplements is limited, so many side effects are unknown regarding both legal and illegal<unk>  supplements.
Prohormone
Xenohormone
Neurohormone
Hormone
Local hormone
Gastrointestinal hormone
Sex hormone
Neuropeptide