TB-500 Guide
Thymosin Beta-4, Dosage & Systemic Healing
Complete TB-500 (Thymosin Beta-4) guide: systemic healing mechanisms, dosage protocols, cardiac protection, hair follicle activation.
What Is TB-500?
TB-500 refers to the synthetic peptide version of Thymosin Beta-4 (Tβ4), a naturally occurring protein present in the cytoplasm of virtually every nucleated human cell. Tβ4 is a 43 amino acid protein, but when researchers and vendors refer to "TB-500," they typically mean a biologically active fragment — commonly identified as the 17 amino acid sequence (Ac-LKKTETQ or similar) that retains the core actin-binding properties of the full Tβ4 molecule.
The defining feature of Thymosin Beta-4 — and the property that makes TB-500 so distinctive — is its systemic action. Most healing peptides require proximity to the injury site for maximum effect. TB-500, when injected subcutaneously at any location, distributes systemically and promotes repair throughout the body simultaneously. This is because its mechanism operates at the cellular level across all tissue types.
Tβ4 is not orally bioavailable — peptide bonds are broken down in the GI tract before systemic absorption can occur at meaningful concentrations. Subcutaneous injection is the only established route. The peptide cannot be taken as a capsule or dissolved in a beverage for systemic effect.
Full Thymosin Beta-4 protein; TB-500 commercially represents the active healing fragment with the key actin-sequestering domain.
Injected anywhere, heals everywhere — TB-500's systemic distribution is what distinguishes it from localized healing peptides.
Tβ4 levels naturally rise after cardiac injury — exogenous TB-500 mimics and amplifies this endogenous repair response.
How TB-500 Works: Mechanisms
TB-500 Dosage & Protocol
TB-500 Effects by System
The BPC-157 + TB-500 Stack
Guide FAQs
Complete TB-500 (Thymosin Beta-4) guide: systemic healing mechanisms, dosage protocols, cardiac protection, hair follicle activation.
Yes. Shotlee supports tracking TB-500 doses, side effects, and health metrics. It is free to use.
PubMed, ClinicalTrials.gov, and the FDA website are the most reliable sources for current Tb 500 research and regulatory updates. Peer-reviewed journals including the New England Journal of Medicine, The Lancet, and JAMA publish the most impactful clinical trial results. This guide is updated regularly to reflect the latest available evidence. Use Shotlee to track your personal protocol outcomes alongside the published research.
Before starting Tb 500, establish baseline measurements including body weight, waist circumference, blood pressure, and relevant lab work with your healthcare provider. Download Shotlee and begin logging your baseline metrics at least one week before starting treatment. This pre-treatment data provides the comparison point needed to objectively evaluate your treatment response over time. Additionally, discuss potential side effects and management strategies with your prescriber so you are prepared for the initial adaptation phase.
Evidence-based lifestyle modifications that complement Tb 500 protocols include: maintaining adequate protein intake (1.2-1.6g per kg body weight per day) to preserve lean mass, performing resistance training two to three times per week, staying well hydrated with at least eight glasses of water daily, prioritizing seven to nine hours of quality sleep, managing stress through regular physical activity or mindfulness practices, and eating smaller more frequent meals during dose titration phases. Track these lifestyle factors alongside your Tb 500 data in Shotlee to identify which combinations drive your best results.
Track Your TB-500 Protocol in Shotlee
Free dose logging, side effect tracking, and health metric monitoring for your complete protocol.