Tissue Repair Peptide
10 mg / Lyophilized powder
Pricing pendingPrice for this size is coming soon. Ordering will open once pricing is confirmed.
Brand vial shown. Refer to the product details for compound and quantity.
TB-500 is a synthetic version of Thymosin Beta-4, a naturally occurring 43-amino-acid peptide present in virtually all human and animal cells. It plays a fundamental role in cell migration, blood vessel formation, and cellular differentiation. Originally studied extensively in veterinary medicine, it has become one of the most researched peptides for tissue repair applications.
Molecular Formula
C212H350N56O78S
Molecular Weight
4963.44 g/mol
Lumira / TB-500 / 10mg sample
99.6%
Reported sample purity · HPLC
Third-party analysis by BTLabs.
Report issued September 3, 2026.
TB-500 works by upregulating actin, a cell-building protein that plays a crucial role in cell migration and proliferation. It promotes angiogenesis (formation of new blood vessels), reduces inflammation by downregulating inflammatory cytokines, and activates satellite cells for muscle repair. Its small molecular size allows it to travel through tissues efficiently.
Store lyophilized powder at -20°C for long-term storage. Once reconstituted, store at 2-8°C and use within 30 days.
Reconstitute with bacteriostatic water. Add solvent slowly along the vial wall. Do not shake — gently swirl until fully dissolved.
From the community
Feedback on TB-500.
Customer accounts are anecdotal and do not establish safety or efficacy. Products are for laboratory research use only.
I log sleep and sessions, so this isn't a vibe check. Protocol was simple, same window most days, 4 weeks. The thing I actually noticed: The hip stopped cutting my stride short. Strength numbers didn't jump. What changed was how often I canceled the hard part of the day. Nothing overnight. Notes changed in week two. Mileage will vary. Mine was quiet.
Second time through a simple schedule. Rotation came back before strength did. First vial I wasn't sure; this one I was. I didn't test maxes. I just returned to normal sessions.
Using it around training, not instead of it. The old hamstring tug was less sharp on strides. Took about 8 weeks before I trusted the note. Hard to separate from sleep, being honest.
Low expectations. Warm-ups took less time to feel usable. Fine by me.
Low expectations. All-day sitting stiffness was milder — that's the part I'd repeat. Fine by me.
Hard to separate from just training more consistently. The same PT drills finally felt like they stuck.
A closer reading
One selected primary paper, with its findings and limits. A starting point for reading, not a complete assessment of the evidence.
Rat wounds & cell migration assays
The researchers studied full-length thymosin beta4 and observed increased wound closure, collagen deposition, and blood-vessel formation in rats.
This is related-compound evidence. The name TB-500 does not establish equivalence to the thymosin beta4 preparation used in this paper; sequence and formulation must be checked.
Malinda KM et al. · Journal of Investigative Dermatology · 1999
Read the primary paper PMID 10469335Research Use Only: This product is sold for laboratory and research purposes only. It is not intended for human consumption and is not intended to diagnose, treat, cure, or prevent any disease. By purchasing, you agree to use this product solely for legitimate research purposes.