TB-500 is the research form of thymosin β-4, a peptide studied for wound healing, blood-vessel formation and tissue remodelling. Like most of this category, the evidence base is preclinical. Community protocols commonly report 2–2.5 mg per dose, two to three times weekly — a reported figure, quoted here for reference only. TB-500 ships as powder in 5 mg and 10 mg vials, and the number on the label means nothing until it is dissolved in a known volume of bacteriostatic water. Below is the arithmetic for every vial-and-water pairing, and a calculator that converts a chosen amount into units on a syringe barrel. Nothing on this page is a protocol.
Open the TB-500 calculator →| Concentration | 1 mL water | 2 mL water | 3 mL water | 5 mL water |
|---|---|---|---|---|
| 5 mg vial | 5,000 mcg/mL | 2,500 mcg/mL | 1,667 mcg/mL | 1,000 mcg/mL |
| 10 mg vial | 10,000 mcg/mL | 5,000 mcg/mL | 3,333 mcg/mL | 2,000 mcg/mL |
Concentration = vial contents ÷ water added. It is the same compound at every volume — more water only means a weaker solution, larger syringe marks that are easier to read, and a larger injection volume. On a standard U-100 insulin syringe, one unit is 0.01 mL at any barrel size.
Calculate a TB-500 draw →Education only. This page is educational. Most compounds referenced are not approved for human use, and a "research use only" label carries no legal status of its own.
Arithmetic, not advice. The calculator performs unit-conversion arithmetic on figures you enter. It does not recommend a dose, a quantity, or a method of administration.
Reference ranges. Any amounts mentioned are values commonly reported in published research and community protocols, provided for reference only. Reported does not mean established, safe, or effective.
Not medical advice. Nothing here constitutes medical advice, diagnosis, or treatment. Consult a qualified healthcare professional before beginning any protocol.