Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
An immune-modulating 28-amino-acid peptide marketed as Zadaxin (thymalfasin) — approved in 35+ countries for chronic hepatitis B/C and as an immune adjuvant, but NOT FDA-approved in the US.
3 of 13 vendors lab-verified
Verified purity per dollar — the cheapest that's actually been tested
vial · 10mg· glacieraminos.shop· price updated today
$63.99✓ $6.40/mg
single-vial price — packs may be lower
vial · 10mg· ionpeptide.com· price updated today
$65.00✓ $6.50/mg
2% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· peptidesupplyco.com· price updated today
Lot TA1004132026· tested 2026-04-14
$70.00✓ $7.00/mg
9% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· riptidewellness.com· price updated today
$65.00✓ $6.50/mg
2% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· peptidology.co· price updated today
$69.99✓ $7.00/mg
9% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· orosresearch.com· price updated today
Lot OR-LPTA5-326-B1· tested 2026-04-09· vendor-declared ✓
$44.99✓ $9.00/mg
29% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· skyepeptides.com· price updated today
$79.00✓ $7.90/mg
19% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· verifiedpeptides.com· price updated today
$80.00✓ $8.00/mg
20% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· profoundaminos.com· price updated today
$76.00✓ $7.60/mg
16% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· simplepeptide.com· price updated today
$86.00✓ $8.60/mg
26% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· texpeptide.com· price updated today
$50.00✓ $10.00/mg
36% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· biolongevitylabs.com· price updated today
$129.97✓ $13.00/mg
51% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· peptidetech.is· price updated today
$29.99$6.00/mg
single-vial price — packs may be lower
vial · 10mg· orbitrexpeptide.is· price updated today
$79.99$8.00/mg
single-vial price — packs may be lower
22 vendors not shown — trust grade below C, or not enough verified COA data yet. We only list sources with a C grade or better.
Best price trend
Lowest $/mg for Thymosin Alpha-1 · verified listings only
$6.40/mg
▼ 7% over 90d
Peptide Tech has the lowest single-vial Thymosin Alpha-1 price at $6.00/mg among 22 COA-verified vendors on Disclosed Labs. Bulk or multi-vial deals may be lower. That's 54% less per mg than the most expensive option.
What is the price range for Thymosin Alpha-1?
Research-grade Thymosin Alpha-1 ranges from $6.00/mg to $13.00/mg across 14 verified sources, a 54% spread per mg.
How are Thymosin Alpha-1 prices verified on Disclosed Labs?
Every listed vendor holds a Grade C or better trust score, computed independently from lab Certificates of Analysis — not from payments or sponsorships. Prices are scraped and fact-checked daily. Vendors cannot pay to improve their ranking.
Check formulation: Lyophilized powder requires reconstitution before use. Pre-mixed solutions are more convenient but may have a shorter shelf life and higher prices.
Compare per-mg cost: Different strengths and quantities make direct price comparison difficult. Calculate the per-milligram cost to find the true best value.
Verify COAs: Look for vendors that publish per-batch Certificates of Analysis from named, accredited labs. Use the Full safety panel filter to require endotoxin, sterility, and heavy-metals testing on the current batch — not just HPLC purity.
Thymosin alpha-1 has been studied in 90+ clinical trials. A meta-analysis by Yang et al. (Antiviral Research 2008, PMID 18078676) in chronic hepatitis B found antiviral efficacy comparable to interferon-alpha. Tuthill, Rios & McBeath (Ann N Y Acad Sci 2010, PMID 20536460) reviewed the global Zadaxin program across HBV, HCV, melanoma, HCC, and vaccine adjuvancy. Romani et al. (Blood 2006, PMID 16741252) established the TLR9 / IDO dendritic-cell mechanism that underlies Ta1's dual pro-inflammatory / tolerogenic effects. During the COVID-19 pandemic, Liu et al. (Clin Infect Dis 2020, PMID 32442287) reported reduced mortality (11.11% vs 30.00%, p=0.044) in severe lymphopenic COVID-19 patients via restoration of exhausted T cells. A 2024 systematic review by Dinetz & Lee (Altern Ther Health Med, PMID 38308608) covering 30+ trials and 11,000+ subjects concluded Ta1 is a well-tolerated and effective immune modulator, and argued the FDA's 2023 restriction appeared unfounded given the clinical evidence. US regulatory status: NOT FDA-approved; removed from 503A Category 2 in September 2024 after nominator withdrawal; PCAC voted AGAINST inclusion on the 503A Bulks List on December 4, 2024.
This platform provides informational tools only, not medical advice.
Thymosin alpha 1: past clinical experience and future promise (Tuthill et al., Ann N Y Acad Sci)
2010
Thymosin alpha1 activates dendritic cell tryptophan catabolism and establishes a regulatory environment for balance of inflammation and tolerance (Romani et al., Blood)
2006
Comparison of the efficacy of thymosin alpha-1 and interferon alpha in the treatment of chronic hepatitis B: a meta-analysis (Yang et al., Antiviral Res)
Prices verified as of July 2026. Actual prices may vary. For research use only.
Single-vial list prices by default for a fair head-to-head — switch to Multi-vial / bulk for pack pricing. Estimates only; verify at vendor before purchase. For research use only. Not medical advice.
2008
Disclosed Labs