TB-500
TB-500 is a synthetic version of the active region of Thymosin Beta-4, a naturally occurring peptide involved in actin regulation, cell migration, and tissue.pair.
Potency loss over time
Estimated potency retained (%) per storage condition. Hover the chart for details.
⚠ A structural estimate, derived from each compound's sequence length, cyclisation and oxidation-, deamidation- and light-sensitive residues. Indicative only — not lab-measured per batch.
Time in body
How much of a single dose remains over time, modelled from the terminal half-life. Illustrative — not a dosing tool.
Half-life ~30 min (animal PK) · effectively cleared (~97%) after ~2.5 h (5 half-lives).
Research context only — not dosing guidance. · Source: Thymosin β4 plasma ~30 min (tissue retention longer)
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
 CER
CERTAPEPTIDES
in stock 🇷🇴 RO
| €31.49 | €15.74/mg | 98% | ✔ Janoshik | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
 PHD
PhD PEPTIDES
in stock 🇪🇺 EU
| €22.63 | €4.53/mg | 99% | ✔ HPLC | Shop → | ||
| 2 |
 PUL
PULSE PEPTIDES
in stock 🇨🇾 CY
| €34.99 | €7.0/mg | ▼6.7% | 99% | ✔ HPLC/qNMR | Shop → | |
| 3 |
 RES
RESEARCH PEPTIDES EUROPE
in stock 🇪🇸 ES
| €34.99 | €7.0/mg | 99.8% | ✔ HPLC/LC-MS | Shop → | ||
| 4 |
 CRY
CRYSTAL PEPTIDES
in stock 🇧🇬 BG
| €34.99 | €7.0/mg | 99.3% | ✔ HPLC | Shop → | ||
| 5 |
 CLE
CLEAN PEPTIDES
in stock 🇳🇱 NL
| €39.95 | €7.99/mg | 99% | ✔ HPLC | Shop → | ||
| 6 |
CER
CERTAPEPTIDES
in stock 🇷🇴 RO
| €44.49 | €8.9/mg | 98% | ✔ Janoshik | Shop → | ||
| 7 |
 PEP
PEPSPAN
in stock 🇬🇧 UK
| €59 | €11.8/mg | 98% | ✔ HPLC | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
 PEP
| €35 | €3.5/mg | 99.2% | ✔ HPLC | Shop → | ||
| 2 |
 REG
REGENORIX PEPTIDES
in stock 🇳🇱 NL
| €39.99 | €4.0/mg | 99.8% | ✔ HPLC | Shop → | ||
| 3 |
 NEX
NEXTGEN PEPTIDES
in stock 🇳🇱 NL
| €44.95 | €4.5/mg | ▼1.3% | 99% | ✔ HPLC | Shop → | |
| 4 |
 PEP
PEPTIDE LAB
in stock 🇳🇱 NL
| €44.95 | €4.5/mg | 99% | ✘ COA Expired | Shop → | ||
| 5 |
 ADR
ADRIA SCIENCE
in stock 🇸🇮 SI
| €47.5 | €4.75/mg | 99% | ✔ HPLC | Shop → | ||
| 6 |
RES
RESEARCH PEPTIDES EUROPE
in stock 🇪🇸 ES
| €48.99 | €4.9/mg | 99.8% | ✔ HPLC/LC-MS | Shop → | ||
| 7 |
 24P
24PEPTIDES
in stock 🇳🇱 NL
| €49 | €4.9/mg | ▲5.9% | 99% | ✔ Liquilabs | Shop → | |
| 8 |
 PRI
| €49.95 | €5.0/mg | ▼6.0% | 99% | ✔ HPLC | Shop → | |
| 9 |
 OME
| €49.99 | €5.0/mg | ▲1.5% | 99% | ✔ Third-party | Shop → | |
| 10 |
 PEP
PEPTIDE KONING
in stock 🇳🇱 NL
| €58.46 | €5.85/mg | ▼9.5% | 99% | ✔ COA | Shop → | |
| 11 |
 FIT
FIT PEPTIDES
in stock 🇳🇱 NL
| €59.95 | €6.0/mg | ▲6.6% | 99% | ✔ Janoshik | Shop → | |
| 12 |
CLE
CLEAN PEPTIDES
in stock 🇳🇱 NL
| €59.95 | €6.0/mg | 99% | ✔ HPLC | Shop → | ||
| 13 |
CRY
CRYSTAL PEPTIDES
in stock 🇧🇬 BG
| €59.99 | €6.0/mg | 99.9% | ✔ HPLC | Shop → | ||
| 14 |
 BEY
BEYOND PEPTIDES
in stock 🇪🇺 EU
| €64.44 | €6.44/mg | 99% | ✔ HPLC | Shop → | ||
| 15 |
 PEP
PEPTA SUPPLY
in stock 🇳🇱 NL
| €69.99 | €7.0/mg | 99% | ✔ HPLC | Shop → | ||
| 16 |
 PAR
PARTICLE PEPTIDES
in stock 🇸🇰 SK
| €79.99 | €8.0/mg | 99% | ✔ HPLC | Shop → | ||
| 17 |
CER
CERTAPEPTIDES
in stock 🇷🇴 RO
| €89.99 | €9.0/mg | 98% | ✔ Janoshik | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
CER
CERTAPEPTIDES
in stock 🇷🇴 RO
| €163.49 | €8.17/mg | 98% | ✔ Janoshik | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
PEP
PEPTIDE LAB
in stock 🇳🇱 NL
| €124.95 | €4.17/mg | 99% | ✘ COA Expired | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
PEP
PEPTIDE LAB
in stock 🇳🇱 NL
| €204.95 | €4.1/mg | 99% | ✘ COA Expired | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
PEP
PEPTIDE LAB
in stock 🇳🇱 NL
| €369.95 | €3.7/mg | 99% | ✘ COA Expired | Shop → |
Prices manually checked and updated monthly — source: publicly available supplier data. No affiliate links, no paid placement.
TB-500
Mechanism, evidence level, EU status and COA guidance per compound. No dosages, no protocols — that belongs with a doctor.