Thymosin Alpha-1 Prices

Also known as Thymalfasin; Zadaxin; TA1; Thymosin Alpha

90 listings from 58 vendors, normalised to one honest price per milligram.

Cheapest per mg
$3.86/mg
At
Vialcrest
Vendors
58
Verified COA from
$3.90/mg

Thymosin Alpha-1 price per mg by vendor

Prices last collected October 3, 2026. Prices change often - check the vendor's site before ordering.

Choose a size to compare vendor prices.

Thymosin Alpha-1

Thymalfasin; Zadaxin; TA1; Thymosin Alpha

Immune58 vendors · 90 listings
Size
Ascension Peptides Verified COA
In stockcopy code for 50% off
$71.00
$35.50
$3.55/mg
Deal
AminoVault Verified COA
In stockcopy code for 15% off
$89.25
$75.86
$7.59/mg
Deal
BioLongevity Labs Verified COA
In stockcopy code for 15% off
$129.97
$110.47
$11.05/mg
Deal
In stock
$38.62
$3.86/mg
View
In stock
$38.62
$3.86/mg
View
36 more at 10mg

Mixing Thymosin Alpha-1

What each amount of water produces at this vial size. Educational reference, not a recommendation.

1 mL5.00 mg/mL1.6 mg = 32 units
0.5 mL10.00 mg/mL1.6 mg = 16 units
1.5 mL3.33 mg/mL1.6 mg = 48 units

Vial sizes are the ones vendors list for Thymosin Alpha-1. Syringe marks assume a 1.6 mg dose on a U-100 syringe, taken from this compound's reference range. Work out any other combination in the reconstitution calculator.

About Thymosin Alpha-1

What it is
Thymosin alpha-1, sold as Zadaxin and known generically as thymalfasin, is a 28 amino acid peptide that occurs naturally in the thymus gland. It acts as an immune modulator, strengthening T cell function and influencing innate and adaptive immunity, partly through toll-like receptor signaling. It is approved in many countries for hepatitis B and C and as an immune adjuvant, but it is not approved by the FDA in the United States.
How it works
It enhances T cell maturation and function and modulates immune signaling, including toll-like receptor pathways.
Researched for
Hepatitis B; hepatitis C; immune support; cancer adjunct; vaccine adjuvant
Half-life
Approximately 2 hours
Familiarity
Intermediate
Research evidence
Human trials - phase 2 or 3
Regulatory status
Approved
Key risk
None documented

Disclosure. Some vendors above are Peptul partners and pay us a commission when you buy through our link. Rows are ordered by: Peptul partners first, then what is in stock, then single vials before multi-vial packs, then price per milligram. Paying us moves a vendor up this order and changes nothing else - not their trust tier, COA badge, Peptul Score or reviews, which come from evidence and are worked out the same way for everyone. Available discount codes are shown beside the prices above. Discounted prices require the displayed code where indicated.

For educational and research purposes only. Not medical advice. Always consult a qualified healthcare provider before using any research compound.