Thymosin Alpha-1
Also known as Ta1, Zadaxin, thymalfasin
Thymosin Alpha-1 is a peptide first isolated from thymic tissue, studied for its role in immune signalling. It is approved as a medicine in a number of countries, though not in the UK or the United States, and is marketed under the name Zadaxin where licensed.
Who has Thymosin Alpha-1 in stock
| Supplier | Listing | Price | Per mg | |
|---|---|---|---|---|
| Peptides UKBest valueUK | Thymosin Alpha-1 5mg | £29.95 | £5.99 | In stock, go |
| Certa PeptidesEU and UK | Thymosin Alpha-1 | €20.99 | – | In stock, go |
| PEAK_PEPTIDEInternational | Thymosin-Alpha-1 | €69.90 | – | In stock, go |
| 99 Purity PeptidesUS | Thymosin Alpha-1 Spray | US$84.99 | – | In stock, go |
Live stock is checked hourly at 10 suppliers. A further 7 vetted suppliers have no live feed yet, so we never show them as in stock. We earn a commission from some supplier links when you buy. It costs you nothing extra and never changes the order, which is by price per mg.
What it has been studied for
- Chronic hepatitis B and C, in trials in licensing countries
- Immune response in sepsis, in randomised trials
- Vaccine response in older adults
- T-cell maturation and signalling in laboratory studies
Evidence level: Human trials. Human data exists, but read the details above before assuming it applies to you.
What happened in human trials
Licensed in over 30 countries (as Zadaxin) for hepatitis and as a vaccine booster. It was well tolerated in those trials, mainly with injection site discomfort.
UK legal status
No UK marketing authorisation. Licensed as a medicine in a number of other countries for specific indications. Prohibited in sport under WADA class S2.
Handling
Where licensed, supplied as a lyophilised powder with manufacturer reconstitution instructions, which take precedence. Commonly 1.6mg or 5mg per vial.
Questions
Is Thymosin Alpha-1 approved?
In roughly 35 countries, for indications including chronic hepatitis. Not in the UK and not in the United States.
Is it the same as TB-500?
No. Different molecule, different family, different research area. Thymosin Alpha-1 is a 28-amino-acid immune-signalling peptide; TB-500 is a seven-amino-acid fragment of Thymosin Beta-4.
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