A naturally occurring peptide present in virtually all human and animal cells. Extensively studied for its role in cell proliferation, migration, and angiogenesis in in-vitro and preclinical research contexts.
Add sterile bacteriostatic water to the vial to achieve your target working concentration.
Storage conditions: -20°C, dry
Form: Lyophilised
Solubility: Water, BAC water
Current batch: TB10-260514-195
HPLC purity: 99.58%
MS verified: Yes
Expiry: May 2028
The certificate of analysis for this batch is issued with your order.
C₂₁₂H₃₅₀N₅₆O₇₈S · 4,963.5 Da
TB-500 Thymosin Beta-4 (TB-500)
out of stock
Free shipping on orders over £75
Adults 18+ only. For laboratory research only. Not for use on humans or animals.
Working out volumes? Peptide calculator · Reconstitution guide
TB10-260514-195 · HPLC 99.58%
The batch code matches the vial you will receive. Full analysis — purity, mass spectrometry, residual solvents and microbial limits — is issued with your order.
| Content | 2mg |
| Purity | 99.58% HPLC |
| Form | Lyophilised |
| Storage | -20°C, dry |
| Solubility | Water, BAC water |
Same-day dispatch — order within
Same-day dispatch before 3pm, Mon–Fri. Next dispatch .
via Royal Mail Tracked 24
TB-500
2mg · £17.99
TB-500 is a synthetic peptide corresponding to the active region of thymosin beta-4, a naturally occurring protein involved in actin regulation. It appears throughout the tissue-repair research literature, frequently alongside BPC-157.
A 2026 study in Joint Diseases and Related Surgery examined both compounds in a rat Achilles tendon model with histopathological and biomechanical endpoints — a useful illustration of where the evidence base sits, which is predominantly animal work.
TB-500 in the UK: sizes, prices and delivery
BSR holds TB-500 in stock in the UK and posts it by Royal Mail, so an order normally arrives within one or two working days, with no customs charge and no import delay. Each size is one lyophilised vial, for laboratory research use only.
| Size | Price | Per mg | UK stock |
|---|---|---|---|
| TB-500 2mg | £17.99 | £9.00 | In stock |
| TB-500 5mg | £32.99 | £6.60 | In stock |
| TB-500 10mg | £59.99 | £6.00 | In stock |
| UK delivery | Arrives | Cost |
|---|---|---|
| Royal Mail Tracked 48 | Two working days | £3.95, free on orders over £75 |
| Royal Mail Tracked 24 | Next working day | £4.95 |
| Royal Mail Special Delivery | Guaranteed by 1pm next working day · £750 cover | £10.95 |
Orders placed before 3pm Monday to Friday are dispatched the same working day. Shipping and returns.
Mechanism in the literature
Thymosin beta-4 is described in the literature principally as an actin-sequestering protein, with published research examining consequences for cell migration and angiogenesis in models of tissue injury.
A 2026 review in Sports Medicine of approved and unapproved peptide therapies for musculoskeletal injuries places TB-500 among the unapproved compounds. It holds no marketing authorisation and is supplied for laboratory research only.
Handling and reconstitution
Supplied lyophilised at 2mg, 5mg and 10mg. Room temperature before reconstitution, bacteriostatic water down the inner wall, gentle swirling until dissolved.
Storage and stability
Lyophilised at -20°C, protected from light, two-year retest date. Reconstituted solution refrigerated and used within a short window; avoid repeated freeze-thaw cycling.
Common questions
What purity is BSR's TB-500?
The current batch tests at 99.58% by HPLC against a not-less-than-98% specification, with LC-MS identity confirmation at 4963.3 Da against a theoretical 4963.40. The certificate is issued with your order.
What is the difference between TB-500 and thymosin beta-4?
Thymosin beta-4 is the full 43-amino-acid protein. TB-500 is a synthetic peptide corresponding to its active region, which is why the two names appear interchangeably in supplier listings even though they are not the same molecule.
Is TB-500 an approved medicine?
No. A 2026 review in Sports Medicine categorises it among unapproved peptide therapies. It holds no MHRA or FDA marketing authorisation and is supplied strictly for laboratory research use.
How much does TB-500 cost in the UK?
BSR sells TB-500 at 2mg £17.99, 5mg £32.99, 10mg £59.99. The 10mg vial works out cheapest at £6.00 per milligram, against £9.00 for the 2mg. UK delivery starts at £3.95, and the cheapest delivery is free on orders over £75.
Where can I buy TB-500 in the UK?
BSR supplies TB-500 from stock in the UK at 2mg £17.99, 5mg £32.99, 10mg £59.99, for laboratory research use only. Orders placed before 3pm Monday to Friday are dispatched the same working day by Royal Mail.
How much is TB-500 2mg?
TB-500 2mg is £17.99 for one 2 mg lyophilised vial, which is £9.00 per milligram. It is in stock in the UK, for laboratory research use only.
How much is TB-500 5mg?
TB-500 5mg is £32.99 for one 5 mg lyophilised vial, which is £6.60 per milligram. It is in stock in the UK, for laboratory research use only.
How much is TB-500 10mg?
TB-500 10mg is £59.99 for one 10 mg lyophilised vial, which is £6.00 per milligram. It is in stock in the UK, for laboratory research use only.
- Biçer O. et al. (2026) — Effects of BPC-157 and TB-500 on Achilles tendon healing in rats, Joint Diseases and Related Surgery
- Mendias C.L. & Awan T.M. (2026) — Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries, Sports Medicine
Cited as research context. BSR has no involvement in these studies and they do not constitute claims about this product.
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