Best Peptides for Immune Support

Peptides studied for immune modulation, antimicrobial properties, and immune system regulation.

15 peptides ranked by research effectiveness

01

Thymosin Alpha 1

Well Studied

Synthetic Thymic Hormone | Immune System Modulator

Primary Immunodeficiencies most effective
Vaccine Enhancement most effective
HIV/AIDS Support effective
Half-life: ~2 hours
02

LL-37

Well Studied

Human Cathelicidin | Antimicrobial Peptide

Innate Immune Enhancement effective
Antimicrobial Resistance effective
Immunomodulation effective
Half-life: Short (rapid proteolytic degradation)
03

Thymalin

Well Studied

Thymic Peptide Bioregulator | Immune Modulator

Immune Restoration most effective
Lymphopenia Recovery most effective
Respiratory Illness Prevention effective
Half-life: Not established (complex mixture); effects persist for weeks
04

Thymogen

Well Studied

EW Dipeptide | Thymus Immune Bioregulator

Immune System Modulation most effective
T-Cell Function effective
Immunoglobulin Production effective
Post-Operative Recovery moderate
Half-life: Not established
05

Thymulin

Well Studied

FTS | Zinc-Dependent Thymic Nonapeptide

Immunosenescence effective
T-Cell Deficiency effective
Zinc Deficiency States effective
Half-life: ~10 minutes (free form); extended with nanoparticle formulations
06

Crystagen

Moderate Research

EDP Tripeptide | Thymus Immune Bioregulator

Immune Dysfunction effective
Post-Infection Recovery effective
Radiation/Chemo Recovery effective
Half-life: Minutes (short peptide); effects persist via epigenetic changes
07

Glutathione

Extensively Studied

L-Glutathione | Master Antioxidant Tripeptide

Immune Enhancement effective
Skin Health moderate
Anti-Aging moderate
Half-life: ~10-14 minutes (IV)
08

Vilon

Moderate Research

KE Dipeptide | Thymus Immune Bioregulator

Thymus Rejuvenation effective
T-Cell Activation effective
Age-Related Immune Decline effective
Half-life: Not established
09

Chonluten

Moderate Research

EDG Tripeptide | Bronchial/Lung Bioregulator

Bronchial Function effective
Lung Tissue Health effective
COPD Support moderate
Half-life: Minutes (short peptide); effects persist via epigenetic changes
10

Bronchogen

Moderate Research

AEDL Tetrapeptide | Bronchial Bioregulator

Bronchial Function effective
Respiratory Maintenance moderate
Pulmonary Health moderate
Half-life: Minutes (short peptide); effects persist via epigenetic changes
11

Selank

Well Studied

Anxiolytic & Nootropic Peptide | Tuftsin Analog

Immune Modulation moderate
Antiviral Activity moderate
Inflammation Regulation moderate
Half-life: 2-10 minutes
12

Epitalon

Well Studied

Synthetic Pineal Tetrapeptide | Telomerase Activator

Thymus Regeneration moderate
Immune Surveillance moderate
Half-life: Not established (short peptide)
13

Cortagen

Moderate Research

AEDP | Brain Cortex Bioregulator Peptide

Autoimmune Modulation moderate
IL-2 Stimulation moderate
Half-life: Minutes (short peptide); effects persist via epigenetic changes
14

Livagen

Moderate Research

KEDA Tetrapeptide | Liver Bioregulator

Immunomodulation moderate
Half-life: Not established
15

NA-Selank Amidate

Moderate Research

N-Acetyl Selank Amidate | Enhanced Anxiolytic Nootropic

Immune Modulation moderate
Half-life: 4-6 hours

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