For laboratory research use only. Not for human consumption. All compounds referenced in this article are sold by Explicit SARMs solely as reference materials for in-vitro and animal research by qualified professionals. Nothing here is medical advice, and no statement has been evaluated by the FDA. These materials are not intended to diagnose, treat, cure or prevent any disease.
TB-500 is usually supplied as lyophilized powder, but capsule formats are also available. This article explains what the capsule format changes for laboratory work, and what it doesn’t.
What Is TB-500?
TB-500 is a synthetic peptide based on the actin-binding region of thymosin beta-4, a naturally occurring 43-amino-acid protein that regulates actin, the main structural protein of the cell cytoskeleton. For a summary of the research, see our TB-500 research summary.
Capsules vs Vials
- Fixed units: each capsule holds a fixed fill, which simplifies inventory and unit-based workflows.
- Excipients: capsules contain filler. For in-vitro work, dissolve the contents and account for anything insoluble.
- Fill variation: weigh the contents if your work is sensitive to small differences.
- Vials: TB-500 5mg and TB-500 10mg give more control over concentration for solution-based work.
Available Formats
Explicit SARMs supplies TB-500 Capsules and the combined BPC-157 / TB-500 Capsules strictly as laboratory reference material.
Storage and Documentation
Keep bottles sealed with the desiccant in place, away from moisture, heat and light. Record the lot number and the date opened. A certificate of analysis is available on request through our contact page, and our products are purity-tested by an independent third-party lab. Our guide to reading a COA explains what each section of the report should contain.
Frequently Asked Questions
Are TB-500 capsules for human use?
No. It is sold strictly for laboratory research, and we do not provide dosing, administration or usage guidance. TB-500 and thymosin beta-4 appear on the World Anti-Doping Agency’s prohibited list under S2 (peptide hormones, growth factors, related substances and mimetics).