Research Comparison

BPC-157 vs TB-500

In Short

BPC-157 is synthetic pentadecapeptide (gastric peptide derivative); TB-500 is synthetic peptide fragment of thymosin beta-4. Both are supplied as lyophilized powders for laboratory and in-vitro research use only. The table below compares their molecular data, half-life and research focus side by side.

	BPC-157	TB-500
Classification	Synthetic pentadecapeptide (gastric peptide derivative)	Synthetic peptide fragment of thymosin beta-4
Molecular formula	C62H98N16O22	C212H350N56O78S
Molecular weight	1419.56 g/mol	4963.44 g/mol
CAS number	—	77591-33-4
Research half-life	Short plasma half-life; rapidly distributed in preclinical models	Short circulating half-life in preclinical models
Primary research focus	Wound healing and tissue regeneration	Angiogenesis and blood vessel formation
Form	Lyophilized powder	Lyophilized powder
Price from	$29.99	$50.00

BPC-157

BPC-157 (Body Protection Compound-157) is a 15-amino acid peptide derived from a partial sequence of human gastric juice protein. Its mechanism of action involves upregulation of growth factor expression including VEGF (vascular endothelial growth factor), FGF (fibroblast growth factor), and activation of the FAK-paxillin signaling pathway, which collectively promote angiogenesis, fibroblast migration, and collagen deposition. Extensive preclinical research from the laboratory of Predrag Sikiric at the University of Zagreb has demonstrated BPC-157's effects across numerous animal models including tendon transection (Staresinic et al., Journal of Orthopaedic Research, 2003), muscle crushing injuries, ligament healing, and gastrointestinal lesion repair. Studies suggest BPC-157 operates through the nitric oxide (NO) system and interacts with the dopaminergic system, which may explain its observed gastroprotective and cytoprotective properties in rodent models. Compared to other tissue repair peptides like TB-500 (Thymosin Beta-4), BPC-157 appears to have a stronger affinity for gastrointestinal tissue repair and tendon healing, while TB-500 shows broader systemic tissue migration. BPC-157 is notably stable in human gastric juice, an unusual property for a peptide. Most published research remains in animal models; no large-scale human clinical trials have been completed to date. Store lyophilized powder at -20C; reconstitute with bacteriostatic water and refrigerate at 2-8C for up to 14 days. BPC-157 is among the most widely studied peptides in regenerative medicine laboratories, orthopedic research institutions, and gastroenterology departments.

Full BPC-157 research guide

TB-500

TB-500 is the synthetic version of Thymosin Beta-4, a naturally occurring 43-amino acid peptide present in virtually all human and animal cells. Its primary mechanism of action centers on sequestering G-actin monomers, which promotes actin polymerization and cell migration essential for tissue repair. TB-500 also upregulates expression of laminin-5, a key component of the basement membrane, and activates Akt (protein kinase B) signaling, which research indicates promotes cell survival and inhibits apoptosis. Published studies have demonstrated TB-500's wound healing properties in dermal repair models (Malinda et al., Journal of Investigative Dermatology, 1999) and corneal epithelium regeneration. In equine research, Thymosin Beta-4 has been extensively studied for tendon and ligament repair, with published veterinary trials showing accelerated recovery timelines. The peptide's anti-inflammatory properties appear to operate through suppression of NF-kB and reduction of pro-inflammatory cytokines including IL-1beta and TNF-alpha. Compared to BPC-157, TB-500 has a broader tissue distribution and systemic migration capability, making it a preferred research compound for widespread inflammatory conditions rather than localized injury models. The two peptides target complementary repair mechanisms, which is why they are frequently combined in research protocols. Store lyophilized powder at -20C; reconstitute with bacteriostatic water and refrigerate at 2-8C for up to 28 days. TB-500 is investigated by regenerative medicine centers, veterinary research institutions, and cardiology labs studying post-ischemic tissue recovery.

Full TB-500 research guide

Frequently Asked Questions

What is the main difference between BPC-157 and TB-500?

BPC-157 is classified as synthetic pentadecapeptide (gastric peptide derivative), while TB-500 is synthetic peptide fragment of thymosin beta-4. They are distinct research compounds with different mechanisms — the comparison table above sets out the molecular and pharmacokinetic differences side by side.

Can BPC-157 and TB-500 be studied together?

Some research protocols evaluate related peptides in combination, and research blends exist. Combination study design depends entirely on the research question and model. Both compounds are supplied for laboratory and in-vitro research use only — not for human use.

Are BPC-157 and TB-500 legal to buy for research?

Both are sold in the United States as research chemicals for laboratory and in-vitro use only. Neither is FDA-approved for human use. Researchers are responsible for compliance with all applicable regulations.

Buy BPC-157

From $29.99 — ≥98% HPLC, COA included.

Buy TB-500

From $50.00 — ≥98% HPLC, COA included.

Research Use Only. This comparison summarizes published research. It is not medical advice. Neither compound is for human consumption or FDA-approved.