Thymalin
Also known as thymus polypeptide, thymic extract bioregulator, Thymulen
Thymalin is a polypeptide bioregulator extracted from calf thymus glands, distinct from Thymulin (FTS) which is a specific nonapeptide. Thymalin is a complex mixture of thymic peptides that comprehensively restores thymic function and immune regulation. It has the most extensive clinical research of all thymic bioregulators, with 30+ year studies in Russia showing dramatic improvements in longevity, immune function, and age-related disease risk.
How it works
Complex polypeptide mixture that restores thymic epithelial cell function and normalizes production of thymic hormones (thymulin, thymosin alpha-1, thymopoietin). Stimulates T-cell precursor differentiation, normalizes CD4/CD8 ratio, and reduces chronic low-grade inflammation (inflammaging).
Benefits
- Most extensively studied thymic bioregulator — 30+ year Russian clinical data
- Restores thymic hormone production and T-cell differentiation
- Significantly improves immune function in elderly
- Associated with reduced all-cause mortality in long-term studies
- Improves vaccine response in immunosenescent patients
- Reduces risk of age-related infections
- Comprehensive immune anti-aging effects
Dosing
10–20 mg · Once daily
Typical course: 10mg/day SubQ or IM for 10 days. Repeat 1–2x yearly. Some longevity protocols use alongside Epithalon.
Ranges reflect commonly cited research protocols, not a prescription. Dose with a licensed provider.
Reconstitution
10mg vial with 1mL BAC water = 10mg/mL. Use within 30 days refrigerated.
Helix’s free reconstitution calculator gives you the exact draw volume → get the app
Common stacks
Reported side effects
- Generally very well tolerated
- Mild injection site irritation
- Transient fatigue in first few days possible
Who it’s for
Adults 40+ seeking comprehensive immune anti-aging. Those with immunosenescence, chronic illness, or high infection susceptibility. One of the most evidence-backed longevity peptides in the Khavinson series.
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