Thymalin
Thymalin is a peptide bioregulator extracted from the thymus gland, investigated for its capacity to restore immune homeostasis and modulate T-cell differentiation. It has been studied in aging and immunocompromised models for effects on thymic function, inflammatory regulation, and cellular longevity pathways.
48,00 €
Thymalin is a research peptide bioregulator extracted from the thymus gland, investigated for its immunomodulatory and regenerative properties in experimental models. It has been studied for its capacity to restore thymic function, regulate T-cell differentiation, and support cellular immunity in aging and stress-related research contexts.
Quality Certificates
Independent third-party lab analysis (CoA) - from our own in-house brand.
Thymalin - Thymic Bioregulator & Immune Modulation Peptide
Description
Thymalin is a polypeptide bioregulator isolated from the thymus gland of young calves, composed of a complex of low-molecular-weight peptide fractions known for their immunomodulatory and restorative properties. It is studied for its ability to influence T-lymphocyte maturation, restore thymic-dependent immunity, and modulate inflammatory signaling in aging and immunocompromised research models.
In experimental settings, Thymalin has been observed to stimulate differentiation of T-cell precursors, normalize CD4/CD8 ratios, and enhance the activity of natural killer cells. It has been reported to upregulate interleukin-2 (IL-2) production and modulate cytokine balance, contributing to restored immune homeostasis in models of immunodeficiency, chronic infection, and age-related thymic involution.
Beyond immune regulation, Thymalin has been investigated for its geroprotective effects, including reduced markers of systemic inflammation, improved antioxidant status, and modulation of telomere-associated pathways in long-term aging studies. These findings position it as a peptide of interest in research on cellular longevity and immunosenescence.
Supplied as a lyophilized powder for reconstitution, Thymalin is intended for laboratory preparation and controlled experimental dosing under research conditions.
Clinical Status:
Thymalin is a research peptide evaluated in animal models and long-term observational studies, particularly within Eastern European gerontology research, for immune restoration and aging-related modulation. It is not approved as a medical therapy in most jurisdictions and remains restricted to experimental and laboratory research.
Evidence type:
Human RCT ☐ | Observational ✔ | Animal ✔ | In vitro ✔ | Regulatory ☐
Mechanism of Action
Thymalin works by restoring thymic peptide signaling and modulating T-lymphocyte differentiation within the thymic microenvironment. It influences CD4+/CD8+ ratios, supports maturation of naïve T-cells, and regulates expression of interleukins (IL-2, IL-6) and interferon-gamma. By acting as an epigenetic modulator, it has been observed to normalize NF-κB signaling and restore immune homeostasis in aged and immunocompromised research models.
Benefits
- Restoration of Thymic Function:
Thymalin has been extensively studied for its capacity to reactivate involuted thymic tissue in aging models. Research shows it stimulates the differentiation of thymic epithelial cells and restores the production of native thymic hormones such as thymulin and thymopoietin. This regenerative effect on the thymic microenvironment is central to its role in immunological rejuvenation and is a primary focus of gerontological peptide research. - T-Lymphocyte Maturation and Balance:
A defining feature of Thymalin is its ability to normalize CD4+/CD8+ ratios and support the maturation of naïve T-cells. Experimental data demonstrate enhanced differentiation of precursor lymphocytes into functional helper and cytotoxic populations. This restoration of T-cell balance is considered key to its observed immunorestorative effects in models of immunosenescence and chronic immune dysregulation. - Immunomodulation in Aging Models:
Thymalin has been investigated for its effects on age-related immune decline, including reduced lymphocyte counts and impaired cytokine signaling. Research in elderly cohorts and aged animal models indicates restoration of cellular immunity markers, improved interferon response, and rebalanced inflammatory profiles. These observations have positioned Thymalin as a reference compound in studies of biological aging and immune rejuvenation. - Regulation of Inflammatory Cytokines:
Thymalin modulates the expression of IL-2, IL-6, TNF-α, and interferon-gamma, shifting cytokine profiles toward homeostasis. In chronic inflammation models, it has been reported to attenuate pro-inflammatory signaling while preserving adaptive immune responsiveness. This dual regulatory action makes it a valuable research tool for studying inflammaging and low-grade systemic inflammation associated with chronic disease models. - Epigenetic and Gene Expression Effects:
A distinctive area of Thymalin research focuses on its epigenetic activity, including modulation of DNA methylation patterns and transcription of immunity-related genes. Studies suggest it may influence chromatin accessibility in lymphoid cells, supporting sustained changes in immune gene expression. This positions Thymalin within the broader category of peptide bioregulators investigated for long-term cellular reprogramming effects. - Support for Hematopoietic Recovery:
In experimental models of bone marrow suppression and post-irradiation recovery, Thymalin has been observed to accelerate hematopoietic restoration. Research indicates increased proliferation of lymphoid progenitors and improved reconstitution of peripheral immune populations. These findings support its investigation in contexts of immune depletion, including chemotherapy and radiation-exposure research models. - Neuroendocrine-Immune Interaction:
Thymalin is studied for its role in the neuroendocrine-immune axis, where thymic peptides influence hypothalamic-pituitary signaling. Experimental data show modulation of melatonin secretion, cortisol balance, and pineal-thymic communication. This integrative action positions Thymalin as a research compound bridging immunology, endocrinology, and chronobiology in studies of systemic biological regulation. - Longevity and Lifespan Research:
Long-term studies in aged animal cohorts have reported extended lifespan and reduced age-related pathology following Thymalin administration. Observational human data from elderly populations suggest improved survival metrics and reduced incidence of infections. These outcomes have made Thymalin a frequently cited compound in peptide gerontology research and longevity-focused experimental protocols.
Research Data
| Study / Model | Reported effect |
|---|---|
| Aged murine models | ↑ thymic cellularity, ↑ CD4+/CD8+ ratio, restored T-cell output |
| Immunocompromised rodent studies | ↑ IL-2 and interferon-gamma expression, improved lymphocyte proliferation |
| Elderly human observational cohorts | Reduced incidence of respiratory infections and improved immune markers |
| Radiation-exposure animal models | Accelerated hematopoietic recovery and lymphocyte regeneration |
| Chronic inflammation models | ↓ pro-inflammatory cytokines (TNF-α, IL-6), normalized immune balance |
| In vitro thymocyte cultures | Enhanced T-cell maturation and differentiation signaling |
| Geriatric clinical observations | Improved telomerase activity and extended cellular longevity markers |
Stack Suggestions
Thymalin is often combined in research with:
- Thymalin + Thymosin Alpha-1 → Synergistic restoration of thymic function and T-cell maturation pathways.
- Thymalin + Epitalon → Combined bioregulator approach targeting immune and pineal axis longevity research.
- Thymalin + BPC-157 → Supports systemic recovery while modulating inflammatory and regenerative responses.
- Thymalin + GHK-Cu → Investigated for complementary effects on tissue remodeling and immune balance.
⚠ Stacks are for experimental design only; not safety or efficacy guidance.
Pen Dosage Chart
| Thymalin Pen 20 mg | |
| Volume | 2 mL |
| mg/mL | 10 mg/mL |
| Click-to-Dose | 1 click = 0.1 mg |
| Example(s) | 10 clicks = 1 mg |
Dosage & Protocols Variations
Standard Research Protocol
- Dose: 5 – 10 mg
- Duration: 5 – 10 days
- Frequency: Daily intramuscular administration
- Cycle Interval: 4 – 6 months before repeating
- Goal / Description: Baseline immunomodulatory protocol used in aging and immune restoration models.
Therapeutic Research Protocol
- Dose: 10 – 20 mg
- Duration: 10 – 14 days
- Frequency: Daily
- Cycle Interval: 3 – 6 months off before repeating
- Goal / Description: Higher-dose protocol applied in immunocompromised and chronic inflammation models.
Biohacker Protocol (experimental)
- Dose: 2 – 5 mg
- Duration: 10 – 20 days
- Frequency: Every other day
- Cycle Interval: 2 – 3 times per year
- Goal / Description: Low-dose longevity-oriented schedule explored in epigenetic and thymic regeneration research.
Possible Side Effects
Thymalin is generally well-tolerated in clinical and preclinical studies involving elderly and immunocompromised populations.
Reported side effects are infrequent and mild:
- Transient redness or mild swelling at the injection site.
- Occasional low-grade fever during initial dosing in immunocompromised models.
- Mild fatigue or drowsiness reported in early administration phases.
- Rare allergic-type reactions in sensitive subjects.
No evidence of hepatic, endocrine, or systemic toxicity has been observed in available research data.
Product Attributes
- CAS #: 63958-90-7
- Molecular Formula: N/A (polypeptide complex)
- Sequence (AA): N/A (mixture of low-molecular-weight thymic peptide fractions)
- Molecular Weight: ~1000-10000 g/mol (fraction range)
- PubChem CID: N/A
- Half-Life: ~2-4 hours
- Synonyms: Thymalin, Thymic Polypeptide Complex, Thymus Extract Bioregulator, Thymalinum
- Type: Natural peptide bioregulator (thymic extract complex)
- Research Focus: Immunity & Inflammation, Longevity & Cellular Aging
Scientific References
- Thymalin: clinical-experimental investigation in elderly and aged patients Observational | Animal
- Khavinson VK. Peptides and ageing Observational | Animal
- Anti-inflammatory and anti-aging effects of thymic peptide bioregulators in COVID-19 elderly patients Observational
- Peptide regulation of cell differentiation and gene expression in aging Animal | In vitro
- Short peptides and telomere length regulator hormone irisin: a novel approach to age-related diseases Observational | In vitro
- Effect of thymalin on the immune system and lifespan of mice Animal
- Peptide bioregulators: a novel direction of preventive gerontology Observational | Animal
- Influence of thymalin on functional activity of immune cells in patients with acute pneumonia Observational
Included In The Box
Every product arrives in a premium, custom-designed PEPTIDE.Power box, engineered for convenience, hygiene, and safe storage in your refrigerator. Inside, you will find everything needed for your full research protocol:
- 1× Disposable Pre-Mixed Injection Pen
- Powered by our proprietary PSM Technology™ – precision stabilization & mixing system for consistent potency
- 10× Ultra-thin Needles (33G, 4 mm)
- 10× Alcohol Pads for sterile preparation
- Internal Stabilizing Foam Insert to prevent shaking during transport
- Instruction Panel printed on the inside of the box for quick reference
- Security Seal Sticker ensuring the package has not been opened or tampered with
Storage
Store the product in a refrigerator at 1 – 8°C immediately upon delivery. To maintain optimal stability, keep the pen away from light, and do not expose it to repeated temperature changes.
Once reconstituted (all our pens come pre-mixed), research compounds remain stable for 6 – 8 weeks under proper refrigeration.
Do not freeze after reconstitution. Always keep the box closed so the pen, needles, and alcohol pads stay clean and protected.
For best results, use the product consistently within the recommended time window and always follow your research protocol.
Delivery
We ship with Next-Day EU Delivery via DHL Express or UPS Express.
All orders are prepared fresh on the day of dispatch, placed in EPS Cold-Chain Transport Boxes, and shipped with cooling elements to maintain a stable temperature throughout the journey.
Our logistics process is designed so the package arrives overnight, avoiding customs delays inside the European Union.
Products are shipped from our EU facility, ensuring no import duties, no customs clearance, and always fast and secure delivery.
Payment
Due to the nature of research peptides and the high-risk category assigned by payment processors, credit card companies do not generally support merchants in this field.
For this reason, we accept mainly Bank Transfers.
We also work with a crypto payment provider, and from time to time, card payments may be available depending on processor availability.
Within the European Union, SEPA transfers are fast, low-cost, and usually arrive within minutes to a few hours, making the payment process smooth and simple.
Once the transfer is received, your order is prepared immediately and dispatched the same day, depending on the daily cut-off time.
Please note that we do not dispatch shipments on Fridays or on days before official public holidays. This is done to ensure that parcels can be delivered on the next working day and are not held in transit over weekends or holidays.
This method ensures compliance, security, and continuity of service for all customers across the EU.
Didn't find the answer to your question?
View all frequently asked questions
