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Public product evidence155 certificate records mentioning this compound or product name68 provider-linked · 118 exact product matches

Status

Investigational

This compound has a genuine development or study trail, but it is not an approved routine drug.

Research area

Immune / inflammation research

This profile is grouped by its dominant research area, not by vendor shelf placement.

Aliases

Tα1, Thymalfasin

Signal depth

Medium

No FDA label signal · 82 trials · 1332 PubMed results

Promising

Research evidence

Thymosin Alpha-1 has name-matched human trials with published or reported controlled evidence, but is not FDA-approved. The research is real and ongoing — treat findings as developing rather than settled.

Thymosin Alpha-1 has 25 name-matched clinical trials (highest phase: Phase 4) and 1152 PubMed-indexed publications and is not FDA-approved. 2 trials have posted results.

Human data

Phase 3

Trial quality

Large RCT

Outcomes

Clinical outcomes

Replication

Meta-analysis

Literature

High-impact

PHASE4 · RandomizedThymosin Alpha 1 in the Prevention of Pancreatic Infection Following Acute Necrotizing Pancreatitis PHASE4 · RandomizedThymalfasin Adjuvant Therapy in Hepatitis B Virus (HBV)-Related Hepatocellular Carcinoma (HCC) After Curative Resection PHASE4 · RandomizedEfficacy and Safety of Combination Therapy of Thymalfasin and Entecavir in HBeAg-positive ETV-experienced Patients The Journal of Immunology · 238 citationsTa1, a novel 105 KD human T cell activation antigen defined by a monoclonal antibody.Proceedings of the National Academy of Sciences · 182 citationsProthymosin alpha: isolation and properties of the major immunoreactive form of thymosin alpha 1 in rat thymus.Clinical Infectious Diseases · 169 citationsThymosin Alpha 1 Reduces the Mortality of Severe Coronavirus Disease 2019 by Restoration of Lymphocytopenia and Reversion of Exhausted T Cells

Evidence history

Re-checked nightly against the registries — tracked since 2026-07-09. No band changes yet.

Grades evidence strength, not efficacy or safety. Research-use context; not medical advice. Graded 2026-09-08 from PubMed, ClinicalTrials.gov, ISRCTN, openFDA, Health Canada, and OpenAlex — computed deterministically and refreshed nightly, with a retraction check. How we grade →

What thymosin alpha-1 is

Thymosin alpha-1 is an immune-oriented peptide associated with T-cell and immunomodulatory signaling. It stands apart from many retail peptide names because it has a longer clinical-research history than a typical gray-market recovery compound.

Why it matters

It gives the peptide library a credible anchor for the immune category and helps show that not every non-FDA-approved peptide sits in the same bucket of evidence or seriousness.

Regulatory context

Thymosin alpha-1 is not an FDA-approved peptide drug indication in the United States, but it has been investigated in more formal clinical contexts than many research-market peptides.

Practical reading note

This is exactly the kind of profile where “not FDA approved” should not be confused with “fringe.” The important distinction is between investigational clinical use and generic research-market marketing.