Peptide Grading
Research peptide
TB-500
From
$29.99
Vendors
17
Lab tested
2 COAs
Key benefits
- Helps cells move into damaged tissue
- Heart repair in mice
- Studied for wounds and dry eye
- Less inflammation in animal studies
TB-500 is a synthetic peptide commonly identified as the N-terminal acetylated LKKTETQ fragment of thymosin beta-4. Research has focused on its molecular relationship to actin, cell migration, angiogenesis, and other cellular response pathways.
Peptide Grading check TB-500 listings, pricing, vendor information, and COA details
Typical dose
2-5mg 2-3x/week
Twice weekly
Route
Subcutaneous
Due to longer half-life, can be dosed 1-2 times per week. Some protocols use every other day during loading phase.
Cycle
6-8 weeks
Typical duration
Storage
2-6°C Refrigerated
Follow vendor guidance
Marketplace
Compare all TB-500 vendors
Prices per size, coupon codes, lab reports and shipping.
| Vendor | Price | Coupon | Lab test | Shipping | |
|---|---|---|---|---|---|
HLX LABS 5 mg | $29.99$39.99 Lowest price−25%$6.00/mg | Not on file | 2–5 days
| Buy | |
Certa Peptides 2 mg | $31.49 $15.74/mg | Not on file | 1–4 days
| Buy | |
Biologix Labs 5 mg | $35.99$44.99 −20%$7.20/mg | Not on file | 2 Days
| Buy | |
 PepVida Labs 10 mg | $36.48$64.00 −43%$3.65/mg | Not on file | 1-3 days
| Buy | |
Amino Club 10 mg | $39.99 $4.00/mg | Not on file | 1–4 days
| Buy | |
 Ignite Peptides 5 mg | $40.00 $8.00/mg | Not on file | 3-7 days
| Buy | |
idunpeptides 10 mg | $44.99 $4.50/mg | Not on file | 3–7 days
| Buy | |
Crownwell Research 10 mg | $47.00 $4.70/mg | Not on file | 1-5 days
| Buy |
United States
Switzerland, United Kingdom +29What the evidence shows
Most evidence is for thymosin beta-4, the full natural protein, which has animal data and a few small human trials (eye drops for dry eye, topical gel for wounds).
TB-500 sold online is usually a short synthetic fragment of that protein, and sometimes the full sequence; vendors vary. The fragment itself has essentially no human research.
Safety and regulatory position
Not FDA-approvedTB-500 is not approved as a drug anywhere. In April 2026 FDA removed it from Category 2, its list of bulk substances flagged for safety concerns in compounding. That is not an approval: an FDA advisory committee reviewed it in July 2026, and no rule allowing pharmacies to compound it has been finalized.
There is no reliable human safety data for injected TB-500. Because it promotes cell migration and blood-vessel growth, the same theoretical tumor concern raised for BPC-157 applies. It is prohibited in sport at all times under the WADA list (S2 peptide hormones and growth factors).
Research-grade material sold online is not an approved drug. Its identity, purity and amount can't be assumed without independent testing, so check the vendor's batch COA.
FAQ
Frequently asked questions.
TB-500 is a synthetic version of the naturally occurring Thymosin Beta-4, one of the most popular peptides for tissue repair and recovery research.