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TB-500 (Thymosin Beta-4 Fragment 17-23)

A synthetic peptide that binds G-actin and appears to promote cell migration to injury sites. Human clinical data is limited; most efficacy evidence comes from animal models of wound, tendon, and cardiac repair.

4.9 (verified patients)
Monthly
$39
/month
$39 $65

$1.3 per daily dose

Start the 2-Minute Eligibility Form (for adults already running peptide protocols)
Prescription from a Licensed U.S. Pharmacy Not a research chemical. Not gray market. Legally prescribed and fulfilled.
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How It Works

1

Fill the eligibility form.

Takes 2 minutes. Real medical history, real labs if you have them.

2

Licensed clinician reviews your case.

If TB-500 isn't right for you, they tell you and refund you.

3

Prescription routes to our partner 503A pharmacy.

Compounded to order, sterile-filtered, third-party tested.

4

Ships cold to your door within 5–7 business days.

Includes vial, bac water, syringes, and a dosing sheet your prescriber signed off on.

Why Patients Choose

Studied primarily in animal models for accelerated wound closure (Malinda et al., FASEB J, rat dermal wound model)

Reduced infarct scar size in mouse post-MI cardiac studies (Bock-Marquette et al., Nature, 2004)

Tendon healing acceleration shown in rat Achilles transection model (not yet replicated in humans)

Human safety data: small Phase 2 trials in epidermolysis bullosa and dry eye showed acceptable tolerability at the studied doses

We are not aware of large-scale human efficacy trials for the musculoskeletal uses people commonly seek it for

Clinical Evidence

Clinical Trial

Bock-Marquette I, et al. Nature. 2004;432(7016):466-72 — mouse cardiac repair model Malinda KM, et al. FASEB J. 1999;13(13):1659-66 — rat full-thickness wound model Sosne G, et al. Expert Opin Biol Th

Proven
In clinical trials

How

TB-500 is a short fragment (amino acids 17-23) of a larger natural protein called thymosin beta-4.

Thymosin beta-4 binds to G-actin inside cells. In animal injury models, this appears to help cells migrate to damaged tissue and lay down new structure faster. That is the proposed mechanism. It is not a steroid. It does not increase testosterone. It does not build muscle directly.

Safety Information

Important information about TB-500 safety and side effects.

Important Safety Information

Warnings

Common Side Effects

Frequently Asked Questions

— Same molecule. Different supply chain. Ours is compounded by a US-licensed 503A pharmacy under USP-797 sterile rules, tested per batch for identity, purity, and endotoxins. You get a COA.

— No. We're telling you upfront: most efficacy data is animal. Human trials exist mainly for dry eye and EB. If you need certainty, this isn't your product.

— TB-500 is on the WADA prohibited list. If you compete in tested sport, do not order this.

— Yes. A licensed clinician in your state reviews your intake and signs the script. If you're not a fit, you're not getting it.

— Stop dosing, contact the prescriber on file. We carry malpractice coverage and the pharmacy carries product liability.

What Patients Are Saying

Real reviews from verified ArgoMD patients.

CM
Chris M.
Verified Patient

Started TB-500 for recovery after a shoulder injury. Within weeks I noticed reduced pain and faster healing than my PT expected. Impressed.

March 2026
AT
Alex T.
Verified Patient

As someone who trains hard, TB-500 has been a game changer for recovery. Less soreness, faster return to training, and my joints feel better overall.

February 2026
BH
Brian H.
Verified Patient

My physician at ArgoMD recommended TB-500 as part of my optimization protocol. The quality is excellent and the results speak for themselves.

January 2026

30-Day Money-Back Guarantee

If you're not completely satisfied with your first month, contact us within 30 days for a full refund. No questions asked.

Safety & Compliance

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If you're already running peptide protocols off-market and want a legitimate prescription source with batch testing and a real clinician, start the eligibility form. If you're new to peptides, talk to your primary care first.

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