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Compound library

Peptides

Deep profiles for diligence, not product pages. Filter by goal or open any profile for mechanism, evidence, and citations.

45 compounds catalogued

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AllRecoveryFat lossMuscle / GH axisSkin / repairSleep / recovery adjunctMetabolicCognitive / nootropicMood / anxietyNeuroprotectionImmune supportGut healthLongevity / agingSexual health

Showing 3 peptides tagged Immune support.

Thymosin Alpha-1

Stronger clinical signal

A 28-amino-acid immunomodulatory peptide, marketed in dozens of countries as Zadaxin/thymalfasin for chronic viral hepatitis and as an immune-response adjunct in cancer and infection. One of the few peptides in this space with genuine international drug-approval history.

Immune support · Longevity / aging

LL-37

Limited human data

The only human cathelicidin antimicrobial peptide, naturally released at wound margins during healing. Studied as a synthetic topical treatment for hard-to-heal chronic wounds, giving it more human RCT support than most "recovery peptide" research chemicals.

Immune support · Skin / repair

Thymalin

Emerging

A complex of polypeptides extracted from calf thymus tissue, used clinically in Russia since the 1970s as an immune-modulating and geroprotective agent. Backed mainly by Russian-language research from a single research institute, without independent replication in Western trials.

Immune support · Longevity / aging

Evidence labels

  • EmergingMostly preclinical or early signals; human athletic data is thin.
  • Limited human dataSome human pharmacology or small studies; outcomes for fitness use remain limited.
  • Stronger clinical signalSupported by larger clinical trials in defined medical populations.

Anodized by evidence strength: blue = stronger clinical/human data, violet = limited human data or mechanism, steel = emerging/anecdotal, and amber = an in-house STACKD summary.