BPC-157 — 5mg
109.99€
Thymosin Alpha-1 — 10mg
The immune-modulating peptide that 35+ countries approved before it reached your radar.
169.99€
Ex Tax 169.99€
- In Stock
- Evidence tier: Established
- Format: Lyophilized
- Purity: 99.7%
- Vial size: 10mg
For laboratory research use only. Not for human or veterinary use.
About Thymosin Alpha-1
Thymosin alpha-1 (Tα1) is a 28-amino acid peptide naturally produced by the thymus gland that plays a central role in immune system maturation and regulation. It has been approved as an immune modulator in over 35 countries and has been the subject of extensive clinical research in infectious disease, oncology, and immunodeficiency. Researchers study Tα1 for its unique ability to both enhance and regulate immune function without causing immune overstimulation.
Thymosin alpha-1 (Tα1) is a 28-amino acid peptide naturally produced by the thymus gland that plays a central role in immune system maturation and regulation. It has been approved as an immune modulator in over 35 countries and has been the subject of extensive clinical research in infectious disease, oncology, and immunodeficiency. Researchers study Tα1 for its unique ability to both enhance and regulate immune function without causing immune overstimulation.
Thymosin Alpha-1 (Tα1) is a 28-amino acid peptide naturally produced by the thymus gland. It has pleiotropic immunomodulatory effects: stimulates T-cell maturation, proliferation, and differentiation; promotes dendritic cell maturation and antigen presentation via TLR2 and TLR9 signaling; enhances NK cell cytotoxicity; increases antibody responses; modulates cytokine production (IL-2, IFN-alpha, IFN-gamma upregulation); and can both upregulate suppressed immunity and downregulate overactive inflammatory responses. This bidirectional modulation makes it useful in both immunodeficiency and autoimmune contexts.
Mechanism clarity: Well-characterized pleiotropic immune modulation via TLR2/TLR9, T-cell maturation, DC activation
Tags
Key takeaways
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Research score 9/10
Hundreds of clinical studies across decades published studies in the dataset
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Evidence tier: Established
Established — Approved in 35+ countries (as Zadaxin/thymalfasin). Extensive human clinical data for hepatitis B/C, cancer adjuvant therapy, and immunodeficiency. Well-characterized safety profile over decades.
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Human data
Extensive — multiple RCTs in hepatitis B/C, cancer adjuvant therapy, immunodeficiency
Storage and handling
Lyophilised powder: Room temp or refrigerated
After reconstitution: Refrigerate, use within 30 days
Reconstitution steps from the dataset
- Clean. Remove flip-top cap and swab rubber stopper with alcohol.
- Draw water. Draw 2mL of bacteriostatic water into syringe.
- Inject water. Insert needle through stopper and slowly inject water down the side of the vial.
- Dissolve. Gently swirl until fully dissolved. Solution should be clear.
- Label. Label vial with date and concentration (5mg/mL). Refrigerate immediately.
- Dose. For 1.6mg (Zadaxin standard): draw 0.32mL (32 units). For 3mg: draw 0.6mL (60 units). Inject SC daily or EOD.
Safety and limitations
Studied for: Immune enhancement, Chronic hepatitis B/C, Cancer immunotherapy adjunct, Long COVID recovery, Chronic fatigue syndrome
Reported onset: 1-2 weeks for immune marker changes; 4-8 weeks for subjective improvements
Reported duration: 4-12 week cycles typical; some use ongoing under practitioner guidance
Community reports: Users report feeling "more alert and energetic." Some report improved lymphocyte counts. Remarkably well-tolerated per decades of Zadaxin commercial data. Low-grade fever and muscle aches are signs of immune activation.
For research and educational use only. Source values are reproduced from the current PeptidesEuro content dataset and are not medical advice.
Quality and specifications
Product details
- Product code
- L-TA1-10
- Availability
- In Stock
- Evidence tier
- Established
- Format
- Lyophilized
- Purity
- 99.7%
- Vial size
- 10mg
Reconstitution reference
- Bacteriostatic water
- 2 mL
- Concentration
- 5mg/mL when reconstituted with 2mL. 1.6mg dose = 0.32mL (32 units on insulin syringe).
- Syringe
- 29-31G insulin syringe
Research parameters
- Standard amount
- 1600 µg
- Alternative amount
- 3000 µg
- Vial
- 10 mg
- Dataset estimate
- 1 vial lasts ~6 days at 1.6mg/day
Lab report record
- Laboratory
- Janoshik Analytical
- Test date
- 2026-03-01
- Document
- PDF not attached
See the science
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Read study: Thymosin alpha 1: a comprehensive literature review (opens in a new tab)
Thymosin alpha 1: a comprehensive literature review
Recognized for modifying, enhancing, and restoring immune function; decades of clinical use across multiple indications
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PMID 27450734
Read study: Immune Modulation with Thymosin Alpha 1 Treatment (opens in a new tab)
Immune Modulation with Thymosin Alpha 1 Treatment
Pleiotropic mechanism affecting multiple immune cell subsets; effective in immunosuppressed patients
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Thymalfasin (Zadaxin) — Regulatory Approval in 35+ Countries for Hepatitis B
Approved as immune modulator in over 35 countries for chronic hepatitis B treatment; extensive clinical safety data spanning decades
Studies are listed for reference. Most were carried out in animal or cell models; their findings do not establish safety or effect in humans.
Further reading
Community evidence
- Source window English Reddit Updated 13 Aug 2026 · 10-year window
- Coverage confidence Low Confidence in the available community sample
- Distribution Pending Not enough data for a distribution.
Selected reports
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10 months agor/covidlonghaulers · Post
I injected a small dose of 0.5mg yesterday, and this morning, I started to feel that familiar immune response, like the beginnings of a cold or flu: taste buds off, feverish, sensitive skin, light chills, tired. … I injected a small dose of 0.5mg yesterday, and this morning, I s…
Based on 1 qualifying reports from 1 threads. 37 candidates excluded as duplicates, promotion, deleted content, or lacking concrete personal experience. Reddit self-reports are not medical evidence or proof of causation.
Questions about Thymosin Alpha-1
Questions and answers recorded for this product.
Yes — as Zadaxin (thymalfasin), it is approved in over 35 countries for chronic hepatitis B treatment. It is not FDA-approved in the US but has extensive international clinical use spanning decades, with one of the most robust safety profiles of any peptide.
It modulates — which is an important distinction. Tα1 upregulates immune responses that are underactive (immunodeficiency, chronic infections) and downregulates responses that are overactive (autoimmunity, excessive inflammation). This bidirectional "thermostat" effect via TLR2/TLR9 signaling is what distinguishes it from crude immune stimulants.
Yes — it gained significant traction during the COVID era. Users in long COVID communities report improved energy and immune markers. Research suggests Tα1 may help engage persistent viral reservoirs by enhancing T-cell and dendritic cell function. Results are mixed but promising.
Reviews
There are no reviews for this product yet.
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