Thymalin
Thymalin (Thymus Extract Peptide)
A thymic peptide extract with immune restoration and longevity research, primarily from Russian longitudinal clinical studies.
Thymalin is not approved by the FDA for human use. It is sold strictly for research purposes only and is not intended for human consumption, diagnosis, treatment, or prevention of any disease or condition. Purchase and use is entirely at your own risk.
Sourcing for research purposes?
View at Ascension Peptides →What it is
Thymalin is a polypeptide extract derived from the thymus gland of calves. It is part of a family of thymic preparations studied by Vladimir Khavinson and colleagues in Russia since the 1970s, including Thymogen and Thymosin Alpha-1.
Unlike synthetic peptides with defined sequences, Thymalin is a biological extract containing a complex mixture of short thymic peptides. It has been studied in Russian geriatric trials for its potential to restore age-related immune decline.
What research shows
- Restoration of T-cell function in elderly and immunocompromised patients in Russian trials
- Reduced mortality and improved health outcomes in Russian longitudinal geriatric studies
- Immune reconstitution in patients with secondary immunodeficiency
- Thymus gland involution (age-related shrinkage) is thought to be partially counteracted
- Normalization of immune biomarkers in elderly populations
What remains unknown
- Independent Western replication of Russian longevity trial results
- Exact active peptide components responsible for observed effects
- Optimal dosing and cycling for immune restoration in healthy aging adults
- Long-term safety profile
Administration basics
Common use cases
Immune restoration, longevity protocols, age-related immune decline, recovery from illness.
Half-life
Varies — it is a complex mixture, not a single defined peptide.
Administration
Intramuscular or subcutaneous injection. Typically used in cycles.
Source this compound
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View at Ascension PeptidesResearch Protocols & Common Usage
Doses used in research
- Khavinson longevity research has used 10mg/day for 10-day courses
- Community protocols commonly follow this same 10mg/day protocol
Administration routes studied
Typical protocol duration
10-day courses are the standard in Khavinson research, typically repeated 1–2 times per year.
Common stacking protocols
- Thymalin + Epithalon — one of the most common combinations in Russian peptide bioregulator protocols
- Thymalin + Thymosin Alpha-1 — combined for comprehensive immune support
Contraindications & combinations to avoid
- Autoimmune conditions — Thymalin stimulates immune function; may exacerbate autoimmune diseases
- Immunosuppressive medications — directly counteracts immunosuppressive therapy
Dosing information reflects doses used in published research and commonly reported community protocols only. This is not a personal recommendation. These compounds are not FDA-approved for human use in the contexts described. Consult a qualified healthcare provider before starting any protocol.
Considering stacking?
See the stacking guide for common combinations with Thymalin and what to avoid.
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Reviews reflect individual user experiences with research compounds and are not medical advice. Results vary. These compounds are not FDA approved for human use. Peptelligent does not verify reported experiences.
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