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⚠️ Educational only · Not medical advice · Consult a doctor · Most peptides are research-only / not FDA-approved for human use

TB-500

Also: Thymosin Beta-4 fragment, Tβ4

🧬Thymosin Beta-4 Fragment

How It Works

Upregulates actin for cell migration and wound healing. Reduces inflammation, encourages new blood vessel growth, and supports stem cell maturation for tissue repair.

Primary Benefits

1Muscle/tissue repair
2flexibility
3injury recovery

Key Studies

Thymosin Beta-4 wound healing and inflammation

Malinda et al. demonstrate Tβ4 promotes wound healing via enhanced reepithelialization, collagen deposition, angiogenesis, and keratinocyte migration in animal models.

preclinical

Thymosin β4 activates cardiac progenitor cells for myocardial repair

Smart et al. (Nature) show Tβ4 activates endogenous cardiac progenitor cells, initiating myocardial and vascular regeneration after systemic administration in mice.

preclinical

Thymosin β4 Phase I safety study in healthy volunteers

Phase I clinical trial demonstrates recombinant Tβ4 is well-tolerated at multiple IV doses in healthy volunteers, with no dose-limiting toxicities or serious adverse events.

moderate

Thymosin β4 promotes dermal healing in diverse models

Tβ4 accelerates dermal healing in normal, diabetic, steroid-treated, and aged animal models. Phase 2 results show modest efficacy in venous stasis and pressure ulcers.

moderate

Thymosin β4 reduces cardiac fibrosis and scar formation

Wei et al. show Tβ4 reduces scar formation post-myocardial infarction by inhibiting ROCK1 signaling, promoting neovascularization, and activating cardioprotective pathways.

preclinical

Safety Notes

Research-only; well-tolerated in Phase I/II trials. Not FDA-approved for systemic use.

Dosing Protocol

⚠️ For educational purposes only. Not medical advice. Consult a healthcare professional before using any peptide.

RouteSubQ
Dose Range2000-5000 mcg
Frequency2x/week
TimingAny time
Cycle Length4-8 weeks
BAC Water2 ml / 5mg vial

Loading phase: 5mg 2x/week for 4 weeks. Maintenance: 2.5mg 2x/week.

Half-Life Visualization

⏱️ Half-Life: 2h

Plasma concentration over time
100%50%0%0t½ = 2h

Legal Status by Country

🇺🇸USA
Research Only
🇨🇦Canada
Research Only
🇬🇧UK
Unregulated
🇪🇺EU
Unregulated
🇦🇺Australia
Prescription Only

Last updated: 2026-01 · Laws change frequently. Verify current status in your jurisdiction.

Expected Timeline

Week 1

Systemic anti-inflammatory effect; improved muscle pliability and reduced stiffness

Weeks 2-4

Improved range of motion; reduced recovery time after training

Month 2-3

Enhanced tissue repair; measurable improvement in chronic injury sites

Long-term

Improved recovery baseline; potential stem cell mobilization benefits

Side Effects & Incidence

Side EffectIncidenceSeverity

Injection site reaction

~8% of usersmild

Transient fatigue

~4% of usersmild

Headache

~3% of usersmild

Incidence rates sourced from published clinical trial data where available; otherwise based on community research observations.

Found in 1 Stack

Injury Recovery Stack

Accelerate healing of musculoskeletal injuries including tendons, ligaments, muscles, and post-surgical recovery

BPC-157TB-500KPVSS-31

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