Thymosin alpha-1
Approved in a number of countries, though not the US. Mainly an immune modulator.
Approved in some countries
| What it is | A 28-amino-acid peptide derived from prothymosin alpha, produced by the thymus. |
|---|---|
| How it is thought to work | Modulates T-cell maturation and function. |
| What the evidence actually shows | Approved and used in over thirty countries for chronic hepatitis B and as a vaccine adjuvant. Studied during COVID-19 with mixed results. |
| Regulatory status | Approved in a number of countries as Zadaxin. Not FDA approved in the US. |
| Dosing | Approved dosing exists in the countries where it is registered, for hepatitis B specifically. That is not a US-approved dose and does not extend to other uses. |
| In the catalog as |
Risks and cautions
- Immune modulation is not automatically desirable — it needs a reason.
- Anyone with an autoimmune condition should treat an immune modulator as a specialist decision.
Before you act on any of this
This page describes what is known and what is not. It is not a recommendation to use anything, and it is not a protocol. Compounds listed as research chemicals are not approved medicines and are not sold for human use. Talk to a doctor who knows your history.