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.
Lowest Price
$36.99
Highest Price
$585.00
Average Price
$109.92
Potential Savings
88%
across 37 options
10 of 37 vendors are lab-verified for Thymosin Alpha-1
We cross-check each vendor's Certificate of Analysis against the issuing lab's own verification portal — so “cheapest” isn't the only signal.
Best price trend
Lowest $/mg for Thymosin Alpha-1 · last 46 days
$1.75/mg
▼ 53% vs 46d ago
Trust grade first, cheapest within grade
vial · 10mgglacieraminos.shop· price updated today
Lot TA10GA-03· tested 2026-02-16
$6.40/mg
73% more per mg
vial · 5mgorosresearch.com· price updated today
Lot OR-LPTA5-326-B1· tested 2026-04-09
$9.00/mg
81% more per mg
vial · 100mgpeptide.partners· price updated today
Lot TA202602· tested 2026-02-25
$3.70/mg
53% more per mg
vial · 10mgpeptidology.co· price updated today
Lot 1669· tested 2026-02-04
$7.00/mg
75% more per mg
vial · 10mgionpeptide.com· price updated today
Lot TA10-05042026· tested 2026-05-08
$6.50/mg
73% more per mg
vial · 10mgskyepeptides.com· price updated today
Lot TA126-10-001· tested 2026-05-04
$7.90/mg
78% more per mg
vial · 10mgpeptidesupplyco.com· price updated 2d ago
Lot TA1004132026· tested 2026-04-14
$7.00/mg
75% more per mg
vial · 10mgverifiedpeptides.com· price updated today
Lot TA032608106· tested 2026-03-09
$8.00/mg
78% more per mg
vial · 10mgbiolongevitylabs.com· price updated today
Lot 30-3-45965· tested 2025-11-20
$13.00/mg
87% more per mg
vial · 10mgriptidewellness.com· price updated today
Lot RWTA1-10-1003· tested 2026-04-22
$6.50/mg
73% more per mg
vial · 10mgsimplepeptide.com· price updated today
Lot TIMAG10/2026-J· tested 2026-01-08
$8.60/mg
80% more per mg
vial · 10mgprofoundaminos.com· price updated today
$6.90/mg
75% more per mg
vial · 5mgtexpeptide.com· price updated today
$10.00/mg
83% more per mg
vial · 10mgcertified-pep.com· price updated today
Lot 260413TL103· tested 2026-04-30
$7.80/mg
78% more per mg
vial · 10mgmedgepeptides.com· price updated today
Lot TAL10LT12· tested 2026-01-12
$11.50/mg
85% more per mg
vial · 10mgezpeptides.com· price updated today
Lot TA10507122025-02· tested 2025-07-23
$5.80/mg
70% more per mg
vial · 100mgreta-peptide.com· price updated today
$1.75/mg
vial · 100mgwellilabs.com· price updated 2d ago
$3.70/mg
53% more per mg
vial · 10mgs1research.net· price updated today
$75.00−41%
$44.00$4.40/mg
60% more per mg
vial · 10mglumipeptides.com· price updated today
$5.20/mg
66% more per mg
vial · 100mgatomiklabz.com· price updated today
$5.85/mg
70% more per mg
vial · 10mgfelixchem.is· price updated today
$6.50/mg
73% more per mg
vial · 10mgplatinumlionpeptides.com· price updated today
$75.00−13%
$64.99$6.50/mg
73% more per mg
vial · 10mgtruepeptidelabs.com· price updated today
$6.50/mg
73% more per mg
vial · 10mgsolutionpeptides.net· price updated today
$6.50/mg
73% more per mg
vial · 10mgpolarispeptides.com· price updated today
$75.00−13%
$65.00$6.50/mg
73% more per mg
vial · 10mgmyoasislabs.com· price updated today
$6.50/mg
73% more per mg
vial · 10mgpeptidecrafters.com· price updated 2d ago
$6.50/mg
73% more per mg
vial · 10mgwellnesspeptides.io· price updated today
$7.00/mg
75% more per mg
vial · 5mgmodernresearchpeptides.net· price updated today
$7.40/mg
76% more per mg
vial · 10mgsouthernaminos.com· price updated today
$99.00−25%
$74.25$7.42/mg
76% more per mg
vial · 16mgyoursoma.com· price updated today
$7.75/mg
77% more per mg
vial · 5mgpepvidalabs.com· price updated today
$8.40/mg
79% more per mg
vial · 10mgalphaomegapeptide.com· price updated today
$8.60/mg
80% more per mg
vial · 15mggeneticpeptide.com· price updated today
$12.00/mg
85% more per mg
vial · 10mgbiotechpeptides.com· price updated today
$13.00/mg
87% more per mg
vial · 10mgcorepeptides.com· price updated today
$14.90/mg
88% more per mg
vial · 5mgpeptidetech.co· price updated 2d ago
$6.00/mg
71% more per mg
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. Every vendor on this page is verified for endotoxin testing — 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 June 2026. Actual prices may vary. For research use only.
Prices are estimates and may vary. For research use only. We may earn a commission on purchases through affiliate links. Not medical advice.
2008
Disclosed Labs