How to reconstitute Thymosin beta-4: mixing and storage

A peptide studied for eye conditions and skin wounds; tendon-repair injections lack controlled human evidence.

Also called: Tβ4, TB4, TB-4, Timbetasin, Timbetasin acetate, RGN-259, RGN-137, RGN-352, NL005, a recombinant Tβ4-related product.

Healing and repair peptides · Full-length actin-binding peptide; related recombinant trial formulations.

Comes as: Investigational sterile ophthalmic solution, Investigational skin gel and IV product, Community: lyophilized powder and blends.

Mixed with: Community powder reports use bacteriostatic water. Trial eye drops were supplied sterile and ready to use..

Common vial sizes: 5, 10 mg. Common water amounts: 2 mL.

  • Amounts and water volumes describe TB-labelled community products; full-length identity was not confirmed.
  • A 5 mg/5 mg BPC/TB blend in 2 mL contains two separate ingredient amounts.
  • Home-reconstituted powder is not the sterile RGN-259 eye formulation.
  • Trial concentrations must not be converted to mg per dose without the drop volume or applied gel mass.

Before mixing: No universal storage instruction applies across trial formulations and unregulated powder vials.

After mixing: Community users refrigerate mixed powder vials. No validated home-mixed Tβ4 shelf life was found.

Related to Thymosin beta-4

Sources

Sources checked: 2026-10-18.

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