How to reconstitute TB-500: mixing and storage

A short piece of thymosin beta-4 with no proven repair benefit in humans.

Also called: TB500, Ac-LKKTETQ, Thymosin beta-4 fragment 17–23.

Healing and repair peptides · N-acetylated seven-amino-acid thymosin beta-4 fragment.

Comes as: Community: lyophilized powder vials, Community: mixed peptide vials and capsules.

Mixed with: Community reports use bacteriostatic water. This does not validate product sterility or stability..

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

A cited report used 5 mg TB with 5 mg BPC in 2 mL; another guide describes a 10 mg TB vial in 2 mL.
Vial identity is unconfirmed. Blend mass and each ingredient mass must be kept separate.
Cloudiness or a clear appearance cannot establish sterility. No approved fragment mixing instructions exist.

Before mixing: No validated consumer storage instruction for a confirmed fragment product was found.

After mixing: Forum users refrigerate mixed vials. No validated stability or sterile-use deadline is established.

Related to TB-500

BPC-157: An experimental repair peptide with mostly animal evidence and a few small human reports.
GHK-Cu: A copper-binding skin peptide with small topical studies and untested systemic injections.
AHK-Cu: A copper peptide used in scalp serums, with laboratory findings and weak patent-only human data.
Thymosin beta-4: A peptide studied for eye conditions and skin wounds; tendon-repair injections lack controlled human evidence.
ARA-290: Experimental peptide studied for small-fiber nerve damage, with uncertain pain relief and safety.
Ac-SDKP: An experimental repair peptide with old human studies, but no proven healing dose.

Sources checked: 2026-10-18.

Information only, not medical advice. Peptifacts does not sell anything and does not link to sellers.