The Peptide Directory

Immune support Peptides

10 compounds in this group, 0 of them with an FDA-approved product. Grouping follows what each compound is studied or marketed for; it does not mean the use is proven.

All immune support compounds (A–Z)

CompoundFDA statusPubMed papersLast 5 yearsRegistered trialsClass
BronchogenNot approved (research only)700Short bioregulator peptide
ChonlutenNot approved (research only)110Short bioregulator peptide
CrystagenNot approved (research only)——0Short bioregulator peptide
LL-37Not approved (research only)2,54387520Human cathelicidin peptide
TB-500Not approved (research only)6029218Thymosin beta-4 fragment
ThymalinNot FDA-approved (used in Russia)23460Thymus peptide extract
ThymogenNot FDA-approved (used in Russia)8140Synthetic dipeptide (Glu-Trp)
Thymosin alpha-1Not FDA-approved (approved in some other countries)592665Thymic peptide
VilonNot approved (research only)——0Synthetic dipeptide (Lys-Glu)
VIPNot approved (research only)8,40088320Neuropeptide

Frequently asked questions

Which immune support peptides are FDA-approved?

None of the 10 compounds in this group has an FDA-approved product; all are research-only or investigational.

Which immune support peptides have the most research?

By PubMed records: VIP (8,400), LL-37 (2,543) and TB-500 (602). 4 have fewer than 25 indexed papers, mostly cell or animal work.

Which have registered human trials?

4 appear on ClinicalTrials.gov, led by Thymosin alpha-1 (65), LL-37 (20), VIP (20) and TB-500 (18).

Comparisons

BPC-157 vs TB-500Thymosin alpha-1 vs TB-500

Reconstitution math

TB-500 10 mg vial mathLL-37 5 mg vial mathCrystagen 20 mg vial mathChonluten 20 mg vial math

Other categories

Weight loss & GLP-1Growth hormone & GHRHTissue repair & recoveryAnti-aging & longevityCognitive, neuro & sleepBlends & stacksSexual & reproductive healthBioregulators & other research compounds

Evidence ranking: best immune support peptides.