All peptidesGrade BGrade BGrade B
Longevity & Immune
Mitochondrial, immune, and cellular-aging peptides with emerging evidence.
Epithalon
Epitalon
A synthetic tetrapeptide studied in Russian cohorts for telomerase activation and circadian regulation.
Longevity & ImmuneNot approved
Thymosin Alpha 1
Zadaxin
An immune-modulating peptide used internationally for hepatitis, sepsis, and adjunct cancer care.
Longevity & ImmuneApproved in 30+ countries; not FDA approved
SS-31
Elamipretide
A mitochondria-targeting tetrapeptide that binds cardiolipin to restore cristae structure and cellular energy output.
Longevity & ImmuneInvestigational