Specialty / Emerging

Longevity hormone — declining levels correlate with age-related decline.

Anti-aging factor — controversial young-blood research.

Myostatin inhibitor — muscle growth research, gene therapy parallels.

Microdose lithium — mood, longevity epidemiology in tap water studies.

Selective androgen receptor modulator — most-studied SARM. Research only, not approved.

AR modulator — bone and muscle research. Research compound, not approved for human use.