Best Peptides for Immune System Support

Immune-boosting peptides in research - thymosin alpha-1, LL-37, BPC-157 and protocols for immune modulation.

Thymosin Alpha-1

A thymic peptide approved in over 35 countries for immune modulation. Enhances T-cell function, dendritic cell maturation, and anti-viral/anti-tumor immunity without overstimulation.

Dose: 1.6-3.2 mg | Route: Subcutaneous injection

Read full Thymosin Alpha-1 guide →

LL-37

A human cathelicidin antimicrobial peptide with broad-spectrum activity against bacteria, viruses, and fungi. Also promotes wound healing and modulates innate immune response.

Dose: 50-100 mcg | Route: Topical or subcutaneous injection

Read full LL-37 guide →

BPC-157

A pentadecapeptide derived from human gastric juice that promotes wound healing and tissue repair. Demonstrates remarkable regenerative properties across multiple tissue types including tendon, muscle

Dose: 250-500 mcg per dose | Route: Subcutaneous injection (or oral capsules)

Read full BPC-157 guide →

Thymalin

A polypeptide complex extracted from calf thymus that restores immune function. Used in Russian medicine for immunodeficiency states and as an adjunct in cancer immunotherapy.

Dose: 5-10 mg | Route: Intramuscular injection

Read full Thymalin guide →

TA1

The clinical designation for Thymosin Alpha-1, used internationally as an immune modulator. Approved for hepatitis B/C and used adjunctively in immunocompromised patients.

Dose: 1.6 mg | Route: Subcutaneous injection

Read full TA1 guide →

Thymulin

A zinc-dependent nonapeptide secreted by thymic epithelial cells that is essential for T-cell differentiation. Levels decline dramatically with thymic involution during aging.

Dose: 1-5 mg | Route: Subcutaneous injection

Read full Thymulin guide →

Lactoferrin

A multifunctional iron-binding glycoprotein found in milk and mucosal secretions with broad antimicrobial, anti-inflammatory, and immunomodulatory activities.

Dose: 200-600 mg | Route: Oral capsule or powder

Read full Lactoferrin guide →

Beta-Defensin

A family of antimicrobial peptides produced by epithelial cells that form the first line of defense against pathogens. Act as natural antibiotics and immune activators.

Dose: 50-200 mcg | Route: Topical or subcutaneous

Read full Beta-Defensin guide →

Vitamin D3 Injection

High-dose injectable vitamin D3 for rapid repletion of deficiency. Telemedicine clinics prescribe it for immune optimization, bone health, and hormone support. Injectable form is ideal for malabsorpti

Dose: 50,000-100,000 IU | Route: Intramuscular injection

Read full Vitamin D3 Injection guide →

Zinc Injection

Injectable zinc provides rapid repletion for immune function, testosterone production, and wound healing. Telemedicine clinics prescribe it for patients with absorption issues or acute immune needs.

Dose: 5-10 mg elemental zinc | Route: Intramuscular or IV injection

Read full Zinc Injection guide →

VIP

A 28-amino-acid signaling peptide found throughout the nervous and immune systems. Studied for its anti-inflammatory and immune-modulating effects, and used intranasally in some chronic inflammatory p

Dose: ~50 mcg per spray | Route: Intranasal spray

Read full VIP guide →

Chonluten

A short synthetic tripeptide bioregulator from the Khavinson family targeted at bronchopulmonary (lung/airway) and mucosal tissue. Used in the bioregulator community for respiratory resilience and muc

Dose: ~1-2 capsules/day or short injectable courses | Route: Oral capsule or subcutaneous

Read full Chonluten guide →

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