TB-500 is one of those peptides where the quality variance between vendors is huge. At $45 for a 5mg vial you're getting legitimate, purity-verified product — at $15 you're probably getting something that isn't what it says on the label. This guide covers where to buy, what to look for, and how to avoid getting burned.
🔑 Key Takeaways
- TB-500 is a synthetic fragment of Thymosin Beta-4, studied for tissue repair — tendons, muscles, ligaments, skin
- Available from US research peptide vendors without a prescription
- Standard vial sizes: 5mg ($40-60) or 10mg ($70-100)
- Most popular buy: Wolverine Stack (BPC-157 + TB-500 combined, $130) from Ascension — better value than buying separately
- Non-negotiables: ≥98% HPLC purity, third-party COA, US-based manufacturing
- TB-500 5mg standalone is available at Ascension for $45
What Is TB-500?
TB-500 is the commonly used name for a synthetic version of Thymosin Beta-4 (Tβ4) — specifically the active fragment (the Ac-SDKP sequence) responsible for most of its biological effects. The full-length Thymosin Beta-4 protein is harder to synthesize and more expensive; TB-500 is the practical, cost-effective equivalent used in virtually all protocols.
It works by upregulating actin — the protein that drives cell migration, proliferation, and tissue repair. When there's tissue damage, actin dynamics are central to how quickly cells move to the injury site and rebuild structure. TB-500 essentially accelerates this process.
Key applications in the research community:
- Tendon and ligament healing
- Muscle injury recovery
- Wound healing acceleration
- Anti-inflammatory effects
- Joint support
It's one of the most used healing peptides alongside BPC-157. The two are frequently stacked — BPC-157 handles local tissue repair while TB-500 promotes systemic healing and cell migration. That combination is called the Wolverine Stack, and it's by far the most popular TB-500 product on the market.
Where to Buy TB-500 — Our Top Pick
Ascension Peptides is the best one-stop option for TB-500 in 2026. US-based, third-party COA on every product, same-day shipping on most orders. Three solid options depending on your goals:
Option 1: TB-500 5mg Standalone — $45
Best if you want to test TB-500 alone or already have BPC-157. Buy TB-500 5mg at Ascension →
⭐ Option 2: Wolverine Stack (BPC-157 10mg + TB-500 10mg) — $130
Most popular option. Combines both healing peptides in one vial — 10mg of each. Third-party COA verified. Buying separately would run ~$80+ for the two, making this stack excellent value. Buy the Wolverine Stack at Ascension →
Option 3: KLOW Blend (GHK-Cu + BPC-157 + TB-500 + KPV) — $165
Adds GHK-Cu (skin and collagen) and KPV (anti-inflammatory) alongside both healing peptides. Best for people focused on skin repair, inflammation, or a broader healing stack. Buy the KLOW Blend at Ascension →
Other Reliable TB-500 Vendors
Ascension is our first pick, but these vendors also have solid reputations for TB-500:
- Core Peptides — US-made, HPLC tested, consistent reputation in the healing peptide community. TB-500 5mg ~$50-55.
- SwissChems — US shipping, decent quality, HPLC tested. TB-500 5mg ~$45-55.
- Peptide Sciences — established vendor with a broad catalog. TB-500 5mg ~$55-65.
All three publish COAs. None are quite as price-competitive as Ascension on the Wolverine Stack, which is why most people end up there for the BPC+TB combo.
TB-500 Pricing Reference 2026
| Size | Expected Price | Red Flag Price |
|---|---|---|
| TB-500 5mg | $40-65 | Under $20 |
| TB-500 10mg | $70-100 | Under $40 |
| Wolverine Stack (BPC+TB-500, ~20mg total) | $110-150 | Under $60 |
TB-500 is a 43-amino acid peptide. Longer peptides are harder and more expensive to synthesize correctly. If someone's selling TB-500 5mg for $15, they're either selling something that isn't TB-500, something that's underdosed, or something that failed purity testing and got repackaged. The $40-65 range reflects what legitimate synthesis and testing actually costs.
What to Look for When Buying TB-500
These are non-negotiables. Don't compromise on any of them.
- HPLC COA ≥98% purity — TB-500 is a 43-amino acid peptide. Synthesis errors are common with larger peptides. A single incorrect amino acid changes the compound entirely. You need HPLC-confirmed purity.
- Batch-specific COA — Not just "COA available." The COA must reference your specific lot number. Generic COAs from a different batch don't tell you anything about what you're actually receiving.
- US-based or US-warehoused — Peptides are heat-sensitive and customs delays create unpredictable temperature exposure. International shipping adds unnecessary risk.
- Transparent labeling — Exact mg per vial, lot number, storage instructions. If a vendor won't tell you the lot number, they're hiding something.
Red Flags
- ❌ No COA or COA only "on request" (request it and see how fast they respond — often they don't have one)
- ❌ HPLC purity not listed or listed as "≥95%" — 95% sounds close but isn't good enough for a compound at these doses
- ❌ TB-500 5mg for under $20
- ❌ Ships from China or India with no US warehouse
- ❌ No customer service contact information or no response within 24 hours
TB-500 Dosage Overview
For a full protocol breakdown, see the TB-500 side effects and dosage guide. Quick reference:
- Standard dose: 2-5mg, 2-3x per week, subcutaneous injection
- Acute injury protocol: 5mg 2x per week for 4-6 weeks (loading phase)
- Maintenance: 2mg 2-3x per week ongoing after the loading phase
- Reconstitution: Add 1-2mL bacteriostatic water per 5mg vial
Use the reconstitution calculator for exact draw volumes based on your vial concentration and target dose.
Should You Buy TB-500 Standalone or the Wolverine Stack?
| TB-500 Standalone | Wolverine Stack | |
|---|---|---|
| TB-500 content | 5mg | 10mg |
| BPC-157 | None | 10mg |
| Price | $45 | $130 |
| Best for | Testing TB-500 alone | Full healing protocol |
| Value | OK | Better — BPC+TB together would be ~$80+ separately |
Recommendation: Most people get better results from TB-500 + BPC-157 combined. The Wolverine Stack at $130 gives you both at 10mg each — better value than buying separately, and the synergy between BPC-157's local repair effects and TB-500's systemic cell migration is well-documented in preclinical research.
The standalone makes sense if you're specifically isolating TB-500 to track its effects, or if you already have BPC-157 on hand and just need a refill of the TB-500 side.
Frequently Asked Questions
The information in this article is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional before starting any new supplement or compound. Results vary by individual.