Longevity

Peptides promoted for anti-ageing and mitochondrial health. Human evidence is generally limited or investigational; longevity claims warrant scepticism.

Community-reported ranges are anecdotal and not clinically validated. Evidence grade shown reflects the strength of available human data. Not a prescription. Legal status varies by country and changes over time; verify locally.

4 peptides

Epithalon

Anecdote / community

Epitalon, AEDG

A synthetic tetrapeptide promoted for anti-ageing based largely on a single research group's work. Independent human evidence is very limited.

SS-31 (Elamipretide)

Human observational

Elamipretide, MTP-131

A mitochondria-targeting peptide in clinical development for mitochondrial and cardiac disease. Investigational; not approved.

Humanin

Animal / preclinical

HN, Mitochondrial-derived peptide

A mitochondrial-derived peptide studied for cytoprotective, metabolic and neuroprotective roles. Human data are mostly associative; therapeutic use is unproven.

Glutathione

Human observational

GSH, L-glutathione

The body's main intracellular antioxidant, a tripeptide of glutamate, cysteine and glycine. It has legitimate research and some clinical uses, but injectable use for skin-lightening is unproven and has drawn safety warnings from regulators.