
Thymosin Beta-4
The full-length 43-amino-acid Thymosin β4 peptide, studied for actin regulation and regenerative signaling.
Read the Thymosin Beta-4 research guide→In stock
✓ 100% purity-match & safe-arrival guarantee
✓ Orders placed before 2:00 PM CT on a business day ship the same day.
✓ Free shipping over $200. One discount per order.
- Great value!Make this a kitThymosin Beta-4 + 3 mL BAC water + 10 syringes + 10alcohol pads — pads free, water & syringes 25% offStarting at$75.11$83.14
- Bacteriostatic Water0.9% benzyl alcohol water for reconstitution, sold as a single vial.$13.14
- Insulin Syringes31G 0.5 mL sterile syringes, sold in packs of 10, 100, or 300.$7
- Alcohol Prep Pads70% isopropyl alcohol pads, sold in packs of 10 or 200.$3
- Best value!Recovery "Wolverine" Research StackThe two most-studied tissue-repair peptides paired the way the recovery literature studies them, with reconstitution supplies included.Starting at$83$111.09
Molecular specification
- Molecular formula
- C212H350N56O78S
- Molecular weight
- 4963.4 g/mol
- CAS number
- 77591-33-4
- Amino acids
- 43
- Appearance
- White lyophilized powder
- Purity (HPLC)
- 98.9%
- Elimination half-life
- ≈ 1–2 h
Mechanism & published research
Sequesters G-actin and modulates cell migration, angiogenesis, and inflammation in research models.
Regenerative and anti-inflammatory effects in preclinical models.
Honest note on evidence: Evidence is largely preclinical.
Descriptions summarize existing published research and are not claims about outcomes from use. Every citation states its study type and population.
How it compares
| Versus | Attribute | Note |
|---|---|---|
| TB-500 | Length | TB-500 is the active fragment; this is the full-length peptide. |
Reconstitution
Concentration math only: add bacteriostatic water to the vial and the resulting concentration is shown below. This is not usage guidance.
| Vial | Bacteriostatic water | Concentration |
|---|---|---|
| 5 mg | 2 mL | 2.5 mg/mL |
| 10 mg | 2 mL | 5 mg/mL |
Storage & stability
| State | Temperature | Duration |
|---|---|---|
| Lyophilized (unopened) | -20°C | 24 months |
| Reconstituted | 2–8°C | up to 4 weeks |
Reviews
Reviews are collected post-delivery and screened to exclude any human-use or dosing-outcome claims before publication. They speak to product quality, shipping, and COA accuracy.
“Cold-packed and tracked, arrived in good condition. Storage table on the page matched the COA notes.”
Product FAQ
Full-length vs TB-500?+
This is the complete 43-aa peptide; TB-500 is the active region. See the comparison note.
Related compounds

Tesamorelin
Stabilized GHRH analog with clinical literature.

CJC-1295
GHRH analog, studied with and without DAC.

Ipamorelin
Selective GHRP / ghrelin-receptor agonist.

BPC-157
Body-protection compound studied in tissue-healing models.