Thymosin Alpha-1 price comparison
28-amino-acid thymic peptide. Prices from 36 vendors, all normalized to price per mg so a 5 mg and a 20 mg vial can be compared fairly.
What the research says about Thymosin Alpha-1
Evidence map →Several randomized controlled trials in humans, often summarized by meta-analyses.
- 622
- Papers
- 39
- RCTs
- 66
- Reg. trials
Thymalfasin is approved as a drug in several countries outside the US (Zadaxin), not in the US.
- Human clinical studies: 71
- Animal / lab only: 185
- Other (reviews, untagged): 366
- Meta-analyses / systematic reviews: 21
- Meta-analysisThymosin alpha 1 alleviates inflammation and prevents infection in patients with severe acute pancreatitis through immune regulation: a systematic review and meta-analysis — Frontiers in immunology, 2025
- Meta-analysisThymosin Alpha 1 Plus Routine Treatment for the Acute Exacerbation of Chronic Obstructive Pulmonary Disease: A Systematic Review and Meta-Analysis — Journal of the College of Physicians and Surgeons--Pakistan : JCPSP, 2024
- Meta-analysisThe efficacy of thymosin alpha-1 therapy in moderate to critical COVID-19 patients: a systematic review, meta-analysis, and meta-regression — Inflammopharmacology, 2023
- Systematic reviewComprehensive Review of the Safety and Efficacy of Thymosin Alpha 1 in Human Clinical Trials — Alternative therapies in health and medicine, 2024
- Randomized trialThe effect of thymopentin add-on in hepatitis B e antigen positive chronic hepatitis B after virus suppression by peginterferon plus entecavir therapy — Cellular and molecular biology (Noisy-le-Grand, France), 2019
- Randomized trialA multicenter, randomized, observation-controlled clinical trial to evaluate the efficacy and safety of thymalfasin adjuvant therapy in patients with HBV-related HCC after curative resection - first announcement of the protocol — Expert opinion on biological therapy, 2015
- Immunotherapy for Elderly Patients With Chronic Osteoporotic Pain — unknown · phase4
- Thymalfasin (Thymosin Alpha 1) to Treat COVID-19 Infection — terminated · phase2
- Radiotherapy With Sequential Chemotherapy Combined With PD-1 Inhibitor and Thymalfasin for BRPC — not yet recruiting · phase2
- Neoadjuvant With Tα1 Plus Immuno-chemotherapy for Resectable NSCLC — unknown · na
- SBRT Combined With Thymalfasin for Metastatic Esophageal Cancer — unknown · phase2
The grade reflects how much and what kind of research exists — not whether Thymosin Alpha-1 works or is safe. It is computed from PubMed study-type tags and ClinicalTrials.gov registrations as of Oct 22, 2026. Research use only; not medical advice.
Research & Pharmacokinetic Specs
28-amino-acid thymic peptide that augments T-cell maturation, activates Toll-like receptors (TLR2 and TLR9) on dendritic cells, and modulates cytokine expression.
Toll-like receptors (TLR2, TLR9) / MyD88 pathway
- •Caution in autoimmune disorders due to immune-stimulatory effects
- •Contraindicated in immunosuppressed organ transplant recipients
- •Rare local erythema or transient fever
Cheapest Thymosin Alpha-1 by vial size
The lowest price at each size, across all vendors. Tap a size for the full ranking.
Where every vendor sits
Each dot is a vendor’s cheapest in-stock Thymosin Alpha-1 vial, in $ per mg. The spread between the leftmost dot and the median is what shopping around is worth.
Compare every Thymosin Alpha-1 offer
| Product | Size | Link to vendor | |||
|---|---|---|---|---|---|
| Protide Health United States Thymosin Alpha-1 10mg COA CLAIMED | Thymosin Alpha-1 10mg | 10 mg vial | $105.00 | $10.50 | View ↗ |
| S1 Research (Step One Ventures) Thymosin Alpha 1 – 10mg COA CLAIMED | Thymosin Alpha 1 – 10mg | 10 mg vial | $38.50 | $3.85best | View ↗ |
| Lab Rat Peptide United States LRP-TA1 10MG TESTED 76% · 2 | LRP-TA1 10MG | 10 mg vial | $39.99 | $4.00 | View ↗ |
| Glacier Aminos United States THYMOSIN ALPHA 1 10MG COA CLAIMED | THYMOSIN ALPHA 1 10MG | 10 mg vial | $44.79 | $4.48 | View ↗ |
| Eros Peptides United States Thymosin Alpha-1 10MG COA CLAIMEDTESTED 77% · 3 | Thymosin Alpha-1 10MG | 10 mg vial | $49.99 | $5.00 | View ↗ |
| PSPeptides United States Thymosin Alpha-1 (1 Vial) — 10MG COA CLAIMED | Thymosin Alpha-1 (1 Vial) — 10MG | 10 mg vial | $54.99 | $5.50 | View ↗ |
| Lux Synth Aminos United States Thymosin Alpha-1 10mg COA CLAIMED | Thymosin Alpha-1 10mg | 10 mg vial | $55.00 | $5.50 | View ↗ |
| Tide Labs United Kingdom Thymosin Alpha-1 — 5 mg COA CLAIMED | Thymosin Alpha-1 — 5 mg | 5 mg vial | $27.99 | $5.60 | View ↗ |
| EZ Peptides United States Thymosin Alpha 1 10mg COA CLAIMED | Thymosin Alpha 1 10mg | 10 mg vial | $58.00 | $5.80 | View ↗ |
| Ameano Peptides United States Thymosin Alpha 1 10mg COA CLAIMEDTESTED 66% · 12 | Thymosin Alpha 1 10mg | 10 mg vial | $62.00 | $6.20 | View ↗ |
| Peptide Crafters United States Thymosin alpha 1 (10mg) COA CLAIMEDTESTED 61% · 60 | Thymosin alpha 1 (10mg) | 10 mg vial | $65.00 | $6.50 | View ↗ |
| Atomik Labz United States Thymosin Alpha 1 – 10mg NO COA FOUNDTESTED 69% · 44 | Thymosin Alpha 1 – 10mg | 10 mg vial | $65.00 | $6.50 | View ↗ |
| Oasis Labs United States Thymosin Alpha-1 10mg COA CLAIMED | Thymosin Alpha-1 10mg | 10 mg vial | $65.00 | $6.50 | View ↗ |
| Polaris Peptides United States Thymosin Alpha-1 10mg NO COA FOUNDTESTED 64% · 107 | Thymosin Alpha-1 10mg | 10 mg vial | $65.00 | $6.50 | View ↗ |
| PSPeptides United States Thymosin Alpha-1 (1 Vial) — 5MG COA CLAIMED | Thymosin Alpha-1 (1 Vial) — 5MG | 5 mg vial | $34.99 | $7.00 | View ↗ |
| Alpha Pro Peptides United States Thymosin Alpha-1 (10mg) COA CLAIMED | Thymosin Alpha-1 (10mg) | 10 mg vial | $69.99 | $7.00 | View ↗ |
| Modified Aminos United States Thymosin Alpha-1 10mg — Single Vial COA CLAIMED | Thymosin Alpha-1 10mg — Single Vial | 10 mg vial | $69.99 | $7.00 | View ↗ |
| Ameano Peptides United States Thymosin Alpha 1 5mg COA CLAIMEDTESTED 66% · 12 | Thymosin Alpha 1 5mg | 5 mg vial | $35.00 | $7.00 | View ↗ |
| Ascension Peptides United States Thymosin Alpha 1 (10MG) COA CLAIMED | Thymosin Alpha 1 (10MG) | 10 mg vial | $71.00 | $7.10 | View ↗ |
| Certified Peptides United States THYMOSIN ALPHA-1 10MG COA CLAIMEDTESTED 60% · 13 | THYMOSIN ALPHA-1 10MG | 10 mg vial | $78.00 | $7.80 | View ↗ |
| FRO Peptides United States Thymosin Alpha-1 – Research Peptide (10mg) — 10mg COA CLAIMED | Thymosin Alpha-1 – Research Peptide (10mg) — 10mg | 10 mg vial | $79.99 | $8.00 | View ↗ |
| Verified Peptides United States Thymosin Alpha-1 Peptide (10MG) COA CLAIMEDTESTED 65% · 39 | Thymosin Alpha-1 Peptide (10MG) | 10 mg vial | $80.00 | $8.00 | View ↗ |
| Modern Aminos United States Thymosin Alpha-1 (TA-1) — 10MG COA CLAIMEDTESTED 79% · 6 | Thymosin Alpha-1 (TA-1) — 10MG | 10 mg vial | $80.00 | $8.00 | View ↗ |
| AminoVault United States Thymosin Alpha-1 10 mg COA CLAIMED | Thymosin Alpha-1 10 mg | 10 mg vial | $84.15 | $8.42 | View ↗ |
| Bio Pepz United States THYMOSIN ALPHA-1 5MG TESTED 81% · 4 | THYMOSIN ALPHA-1 5MG | 5 mg vial | $47.52 | $9.50 | View ↗ |
| Penguin Peptides United States Thymosin Alpha-1 — 10 mg TESTED 73% · 9 | Thymosin Alpha-1 — 10 mg | 10 mg vial | $97.00 | $9.70 | View ↗ |
| Paramount Peptides United States Thymosin Alpha 1 (TA1) (10mg) COA CLAIMEDTESTED 65% · 65 | Thymosin Alpha 1 (TA1) (10mg) | 10 mg vial | $97.75 | $9.78 | View ↗ |
| Direct Peptides United States Thymosin Alpha 1 — 10mg 1 Vial NO COA FOUNDTESTED 76% · 2 | Thymosin Alpha 1 — 10mg 1 Vial | 10 mg vial | $99.00 | $9.90 | View ↗ |
| Peptide Hub United States Thymosin Alpha-1 — 10mg COA CLAIMED | Thymosin Alpha-1 — 10mg | 10 mg vial | $99.00 | $9.90 | View ↗ |
| Alpha Pro Peptides United States Thymosin Alpha-1 (5mg) Vial COA CLAIMED | Thymosin Alpha-1 (5mg) Vial | 5 mg vial | $49.99 | $10.00 | View ↗ |
| The Naughty Needle United States Thymosin Alpha-1 — 10mg TESTED 80% · 2 | Thymosin Alpha-1 — 10mg | 10 mg vial | $100.00 | $10.00 | View ↗ |
| Penguin Peptides United States Thymosin Alpha-1 — 5 mg TESTED 73% · 9 | Thymosin Alpha-1 — 5 mg | 5 mg vial | $59.00 | $11.80 | View ↗ |
| Amino USA United States Thymosin Alpha-1 5mg COA CLAIMEDTESTED 32% · 3 | Thymosin Alpha-1 5mg | 5 mg vial | $60.00 | $12.00 | View ↗ |
| Masters Peptides (M-Peptides) United States Thymosin Alpha 1 (TA1) (10mg) COA CLAIMED | Thymosin Alpha 1 (TA1) (10mg) | 10 mg vial | $120.00 | $12.00 | View ↗ |
| The Naughty Needle United States Thymosin Alpha-1 — 5mg TESTED 80% · 2 | Thymosin Alpha-1 — 5mg | 5 mg vial | $60.00 | $12.00 | View ↗ |
| Licensed Peptides United States Thymosin Alpha-1 5mg — 5mg 1 pack COA CLAIMED | Thymosin Alpha-1 5mg — 5mg 1 pack | 5 mg vial | $61.99 | $12.40 | View ↗ |
| Biotech Peptides United States Thymosin Alpha-1 (10mg) COA CLAIMED | Thymosin Alpha-1 (10mg) | 10 mg vial | $130.00 | $13.00 | View ↗ |
| Warrior Makers United States Thymosin Alpha-1 10mg COA CLAIMED | Thymosin Alpha-1 10mg | 10 mg vial | $139.00 | $13.90 | View ↗ |
| Core Peptides United States Thymosin Alpha-1 – 5MG / 10MG — 10mg COA CLAIMED | Thymosin Alpha-1 – 5MG / 10MG — 10mg | 10 mg vial | $149.00 | $14.90 | View ↗ |
| Based Research United States Thymosin Alpha 1 (TA1) (10mg) COA CLAIMED | Thymosin Alpha 1 (TA1) (10mg) | 10 mg vial | $149.00 | $14.90 | View ↗ |
| Paramount Peptides United States Thymosin Alpha 1 (TA1) Complex Thymulin (10mg/6.4mg) COA CLAIMEDTESTED 65% · 65 | Thymosin Alpha 1 (TA1) Complex Thymulin (10mg/6.4mg) | 10 mg vial | $157.25 | $15.72 | View ↗ |
| Core Peptides United States Thymosin Alpha-1 – 5MG / 10MG — 5mg COA CLAIMED | Thymosin Alpha-1 – 5MG / 10MG — 5mg | 5 mg vial | $81.00 | $16.20 | View ↗ |
| HkRoids United States Thymosin Alpha-1 (Tα1) | Immunomodulatory Peptide for Research Use — 1kit 10mg/vial TESTED 60% · 82 | Thymosin Alpha-1 (Tα1) | Immunomodulatory Peptide for Research Use — 1kit 10mg/vial | 10 mg vial | $220.00 | $22.00 | View ↗ |
| HkRoids United States Thymosin Alpha-1 (Tα1) | Immunomodulatory Peptide for Research Use — 1kit 5mg/vial TESTED 60% · 82 | Thymosin Alpha-1 (Tα1) | Immunomodulatory Peptide for Research Use — 1kit 5mg/vial | 5 mg vial | $126.00 | $25.20 | View ↗ |
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Thymosin Alpha-1 pricing FAQ
What is the cheapest Thymosin Alpha-1 right now?
S1 Research (Step One Ventures) currently lists Thymosin Alpha-1 at $3.85 per mg (Thymosin Alpha 1 – 10mg, $38.50), the lowest of the 36 vendors we compare. The median is $8.00 per mg, so shopping around can save a lot.
How much does Thymosin Alpha-1 cost per mg?
Across 36 vendors, injectable Thymosin Alpha-1 ranges from $3.85 to $22.00 per mg, with a median of $8.00. Larger vials generally cost less per mg, which is why we normalize every listing to a price per milligram.
How much does a 10 mg vial of Thymosin Alpha-1 cost?
A 10 mg vial of Thymosin Alpha-1 costs between $38.50 and $220.00 across 32 vendors, with a median of $79.99. The cheapest is S1 Research (Step One Ventures) at $38.50.
Which Thymosin Alpha-1 vendors publish a COA?
35 of the 44 vendors listing Thymosin Alpha-1 say they publish certificates of analysis (COAs). A COA is the vendor’s own claim and can be copied or re-dated, so we also show independent test ratings (Finnrick) on each vendor page where they exist, and let you filter to “COA claimed” vendors.
Is there human research on Thymosin Alpha-1?
PubMed lists 622 papers on Thymosin Alpha-1: 39 randomized controlled trials, 71 human clinical studies and 185 animal or lab-only studies, plus 66 registered clinical trials. We grade the evidence base as “Strong”: Several randomized controlled trials in humans, often summarized by meta-analyses. This describes how much research exists, not whether it works.
Is Thymosin Alpha-1 legal and safe to use?
Thymosin Alpha-1 is sold for laboratory research use only. PeptideComps compares prices and does not give medical advice, and we can’t vouch for any product’s quality or legality — check the rules where you live.