Immune SupportCompoundable (US) — Approved InternationallyS

Thymosin Alpha-1

Tα1 / Zadaxin

Thymosin alpha-1 (Tα1, brand: Zadaxin) is a 28-amino acid peptide naturally produced by the thymus gland that plays a central role in modulating T-cell maturation and immune response. Approved in 40+ countries for hepatitis B, hepatitis C treatment adjuvancy, and as immune support in cancer patients. In the US, available through compounding pharmacies for immune support. Studied for COVID-19 severity reduction.

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Observational report only — live community data. Not medical advice. Does not recommend doses, protocols, or treatments.
Studies cited
5
Research grade
S
Community score
110

Trend index

Trackers
1,598

Overview

About Thymosin Alpha-1

Thymosin alpha-1 (Tα1, brand: Zadaxin) is a 28-amino acid peptide naturally produced by the thymus gland that plays a central role in modulating T-cell maturation and immune response. Approved in 40+ countries for hepatitis B, hepatitis C treatment adjuvancy, and as immune support in cancer patients. In the US, available through compounding pharmacies for immune support. Studied for COVID-19 severity reduction.

Category
Immune Support
Regulatory status
Compoundable (US) — Approved Internationally
Also known as
Tα1 / Zadaxin
Self-reports
6

Community

What 6 users report

6 community reports

Positive 100% · Neutral 0% · Negative 0%

Most reported benefits

Recovery
6

Dose distribution

Median: 400–600 mcg · Most common: 400–600 mcg

0–25
0
25–50
0
50–100
0
100–200
0
200–400
0
400–600
4
600–1000
0
1000–2000
2
2000+
0

Research

Cited research (3)

Help

Frequently asked

What do PeptIQ users report about Thymosin Alpha-1?

This page summarizes 6 anonymized self-reports from PeptIQ users who track Thymosin Alpha-1, including commonly reported effects and co-tracked peptides. These are observational patterns, not clinical outcomes.

What research is cited for Thymosin Alpha-1?

3 sources are linked on this page, including PubMed articles, clinical trial registries, and FDA labels where applicable. Citations describe published research — not recommendations.

Is Thymosin Alpha-1 safe to use?

This wiki does not assess safety or recommend use. Thymosin Alpha-1 is listed as Compoundable (US) — Approved Internationally. Consult a licensed clinician for personal medical decisions.

What are the purported benefits and uses of Thymosin Alpha-1?

Research, primarily in animal models, suggests Thymosin Alpha-1 may have a wide range of therapeutic potentials due to its ability to promote angiogenesis (formation of new blood vessels), stimulate collagen synthesis, and modulate inflammatory responses.

Source

What is the legal status of Thymosin Alpha-1?

Thymosin Alpha-1 is not approved by the FDA for any human use. There is no legal basis for selling it as a drug, food, or dietary supplement in the United States. The FDA has classified Thymosin Alpha-1 as a Category 2 bulk drug substance, which explicitly prohibits licensed compounding pharmacies from using it in compounded medications.

Source

What are the known or theoretical side effects and risks of Thymosin Alpha-1?

The safety and effectiveness of Thymosin Alpha-1 have not been thoroughly evaluated in humans through rigorous clinical trials. This lack of human data means that safe dosages, short-term side effects, and long-term health consequences are largely unknown.

Source

What is the current state of research on Thymosin Alpha-1?

While there are over 200 published studies on Thymosin Alpha-1, the vast majority are animal or in vitro (cell) studies. These preclinical studies consistently show positive results across various tissue types. However, there is a significant lack of comprehensive human clinical trial data.

Source