Peptides people talk about for longevity.

A GHRH analog that's actually FDA-approved — for a specific condition (HIV-associated belly-fat accumulation). That approval makes it a rare high-evidence peptide, and a useful yardstick for judging everything else.

A naturally occurring copper-binding tripeptide with genuinely decent evidence — as a topical skincare ingredient. The moment people start injecting it as a 'youth reset,' the evidence falls off a cliff.

A synthetic GHRH analog that tells your body to make more growth hormone. Half the GH stack, endlessly confused over 'DAC vs no-DAC,' and marketed as 'safe GH' — a phrase that's doing a lot of work.

A selective growth-hormone secretagogue, the gentle-reputation other half of the GH stack. 'Cleaner' than the older GHRPs — which people wrongly read as 'proven safe.'

A synthetic fragment loosely based on a stomach-protein sequence, sold as a heal-everything injury peptide. The internet loves it; the human evidence is almost non-existent.