Thymalin peptide provides a range of health benefits primarily centered on immune regulation, anti-aging, and tissue regeneration.  It works by stimulating the thymus gland to enhance T-cell production and immune function, improving the body’s ability to fight infections and maintain immune balance. 
Immune Support: Restores immune competence, especially in aging or immunocompromised individuals, and improves response to vaccines and chronic infections.
Anti-Aging & Longevity: Reduces biological age markers, improves skin and vascular health, and extends lifespan in animal models by 20–30%. Often stacked with Epitalon for enhanced longevity effects.
Tissue Regeneration & Recovery: Accelerates healing after illness, surgery, injury, or overtraining by promoting cellular repair and normalizing blood cell formation (hematopoiesis).
Anti-Inflammatory & Cytoprotective: Lowers pro-inflammatory cytokines (e.g., TNF-α, IL-6), reduces tissue fibrosis, and supports wound healing.
Autoimmune Modulation: Helps rebalance overactive immune responses in autoimmune and inflammatory conditions. 
Thymalin is considered safe with minimal side effects, typically causing only mild injection site discomfort or temporary fatigue.  It is administered via subcutaneous or intramuscular injection in short 5–10 day cycles and is widely used in Russia and Eastern Europe for over 40 years.  It is not FDA-approved in the U.S. but is available for research purposes.