Peptide Injections AI
Quiz
Immune & AutoimmuneModerate-High (immune), strong for hepatitis

Thymosin Alpha-1 Peptide Therapy

Benefits, Side Effects, Cost & Protocols

Also known as: Tα1

Thymosin Alpha-1 peptide molecular structure diagram from PubChem

An immune-modulating peptide that enhances T-cell function, reduces inflammation, and supports viral clearance. Used off-label for immune optimization.

ByChris Riley(CFA)&Alex Evans, PharmD, MBA(PharmD, MBA)|Updated

Clinically Reviewed

Reviewed by Alex Evans, PharmD, MBA · Updated May 2026

Evidence-Based

Sourced from FDA, PubMed & ClinicalTrials.gov · View sources

Typical Cost
$200–$400/mo
FDA Status
Approved in 30+ countries; compounded in US
Evidence
Moderate-High (immune), strong for hepatitis
Category
Immune & Autoimmune
Peptides for Immune Support

Who Is Thymosin Alpha-1 Best For?

Immune supportChronic infectionsAutoimmune conditions

Thymosin Alpha-1 Compound Data

Thymosin Alpha-1 peptide chemical structure and molecular formula from PubChem
Molecular Formula
C128H216N32O51S
Molecular Weight
3051.3 g/mol
IUPAC Name
(2R)-2-[[(2S)-2-[[(2R)-2-[[(2R)-2-[[(2R)-2-[[(2R)-2-[[(2R)-2-[[(2R)-6-amino-2-[[(2R)-6-amino-2-[[(2R)-2-[[(2R)-6-amino-2-[[(2R)-2-[[(2R)-2-[[(2R)-6-amino-2-[[(2R)-2-[[(2R,3S)-2-[[(2R,3S)-2-[[(2R)-2-[[(2R)-2-[[(2R)-2-[[(2R)-2-[[(2R)-2-[[(2R)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2R)-2-[[(2S)-2-amino-3-sulfanyl-propanoyl]amino]-3-hydroxy-propanoyl]amino]-3-carboxy-propanoyl]amino]propanoyl]amino]propanoyl]amino]-3-methyl-butanoyl]amino]-3-carboxy-propanoyl]amino]-3-methyl-butanoyl]amino]-3-hydroxy-propanoyl]amino]-3-hydroxy-propanoyl]amino]-4-carboxy-butanoyl]amino]-3-methyl-pentanoyl]amino]-3-hydroxy-butanoyl]amino]-3-methyl-butanoyl]amino]hexanoyl]amino]-3-carboxy-propanoyl]amino]-4-methyl-pentanoyl]amino]hexanoyl]amino]-4-carboxy-butanoyl]amino]hexanoyl]amino]hexanoyl]amino]-4-carboxy-butanoyl]amino]-3-methyl-butanoyl]amino]-3-methyl-butanoyl]amino]-4-carboxy-butanoyl]amino]-4-carboxy-butanoyl]amino]propanoyl]amino]pentanedioic acid
View full compound on PubChem

Thymosin Alpha-1 News

I Reviewed Over 100 Peptide Studies—These 4 Findings Stood Out the Most - Men's Health

Men's Health · today

Thymosin α1 alleviates pulpitis by inhibiting ferroptosis of dental pulp cells - Nature

Nature · 7 months ago

Q&A: Should you trust trending peptide injections? - UVA Today

UVA Today · 1 month ago

RFK Jr. May Reverse a Peptide Ban He Calls “Illegal.” Former FDA Officials Say He Mischaracterized Their Work. - ProPublica

ProPublica · 1 month ago

Peptide Stacking Is Everywhere—But Should You Be Doing It? - Goop

Goop · 1 month ago

News aggregated via Google News. Inclusion does not imply endorsement.

Thymosin Alpha-1 Articles & Guides

In-depth articles about Thymosin Alpha-1 and related peptide therapies.

Thymosin Alpha-1 Peptide for Immune Support: How It Works, Benefits, and What To Expect in 2026

Thymosin alpha-1 peptide for immune support: how it works, clinical benefits, dosing protocols, and safety profile backed by decades of research.

Read article →

LL-37 Antimicrobial Peptide: How Your Body's Natural Defense Molecule Fights Infection

LL-37 antimicrobial peptide: Immune defense explained. Discover how this 37-amino acid molecule kills bacteria, viruses, biofilms, and boosts wound healing. Vitamin D link included.

Read article →

Peptides for Autoimmune Disease: How Immune-Modulating Peptides Are Changing the Game in 2026

Learn how immune-modulating peptides work for autoimmune disease—evidence-backed options, safety, and what therapy actually looks like in practice.

Read article →

KPV Peptide for Immune Modulation and Inflammation: How This Tiny Tripeptide Delivers Big Results

KPV peptide modulates inflammation by inhibiting NF-κB, reducing pro-inflammatory cytokines. Explore mechanism, benefits for gut health, and current evidence.

Read article →

Thymosin Alpha-1 Dosage Guide: How to Build a Smarter Immune Protocol in 2026

Thymosin alpha-1 dosage guide: Evidence-based protocols, 1.6 mg twice weekly dosing, monitoring, and who benefits most from immune therapy.

Read article →

Explore all articles and provider comparisons:

Peptides for Immune Support →

Related Peptides in Immune & Autoimmune

KPV

An anti-inflammatory tripeptide derived from alpha-MSH. Reduces intestinal inflammation and has shown promise for inflammatory bowel conditions and gut health.

LL-37 (Cathelicidin)

A human antimicrobial peptide that plays a key role in innate immunity. Provides direct antimicrobial defense and modulates immune cell signaling.

Browse all peptides in our encyclopedia →
Medical Disclaimer: The information on this page is for educational purposes only and does not constitute medical advice. Peptide therapies have not been evaluated by the FDA for most listed indications.All prices shown are estimates based on publicly available data and may not reflect current pricing — providers and brands set their own prices and can change them at any time. Always verify pricing directly with the provider before purchasing. Consult a licensed healthcare provider before starting any peptide protocol.

Ready to explore Thymosin Alpha-1 with a provider?

Take our 2-minute quiz to get matched with a board-certified provider specializing in Thymosin Alpha-1.

Take the Quiz →