Goal: Immune
Immune support
Peptides discussed for immune function and fighting germs. 5 compounds in this group.
Immune supportThymosin alpha-1
An immune-signalling peptide, a medicine in some countries.
8 experts
Approved medicine
Immune supportLL-37The body’s own germ-fighting peptide, discussed for immunity.
3 experts
Small human studies
Immune supportKPVA tiny anti-inflammatory peptide discussed for gut and skin.
3 experts
Animal & lab only
Immune supportThymalinA thymus peptide complex from Russian ageing research.
2 experts
Small human studies
Immune supportVIPA natural gut and brain peptide, used as a nasal spray.
3 experts
Small human studies
How well studied in people
- Thymosin alpha-1Approved medicine
- LL-37Small human studies
- KPVAnimal & lab only
- ThymalinSmall human studies
- VIPSmall human studies
About this category
These peptides are discussed for immune modulation or antimicrobial activity. Thymosin alpha-1 (thymalfasin) has approvals in some countries outside the EU/US central pathway; VIP, LL-37, KPV and thymalin are not approved immune medicines in the EU, UK or US. Pages collect expert quotes and published research only.