DoseMarks
Not FDA-approvedSynthetic thymosin β-4 fragment

TB-500 Dosage Calculator

TB-500 is commonly sold in 2 mg, 5 mg and 10 mg vials. Enter your vial, water and dose to see exactly where to draw.

Common vials
2 mg · 5 mg · 10 mg

Not FDA-approved for human use.

Step 1

Your vial & dose

U-100 syringes
mg
mL

Step 2

mg

Step 3

Syringe size

Smaller barrels have finer marks, which makes small doses easier to read.

Live syringe preview · 100-unit

010203040506070809010040u

Draw to

40 units

= 0.4 mL of liquid

Concentration
2.5 mg/mL
Each unit contains
25 mcg
Your dose
1 mg
Doses per vial
5
Show the math
  1. Concentration = 5 mg ÷ 2 mL = 2.5 mg/mL
  2. Volume = 1 mg ÷ 2.5 mg/mL = 0.4 mL
  3. Units = 0.4 mL × 100 = 40 units

Dosing schedule

Is there a standard TB-500 dose?

There is no FDA-approved dosing for this compound. This page only converts the dose you enter into syringe units — it does not recommend a dose.

How to mix

How to reconstitute a peptide vial in 5 steps

  1. 01

    Clean

    Wash your hands. Wipe the rubber tops of the peptide vial and the bacteriostatic water with an alcohol swab and let them air-dry.

  2. 02

    Draw the water

    With a new syringe, draw 2 mL of bacteriostatic water — the same number you entered in the calculator. Use several draws if it’s more than your syringe holds.

  3. 03

    Add it slowly

    Insert the needle at an angle and let the water run down the inside wall of the vial, not straight onto the powder.

  4. 04

    Swirl, don’t shake

    Gently swirl or roll the vial until the powder dissolves completely. The liquid should look clear.

  5. 05

    Label & refrigerate

    Write the date and concentration (2.5 mg/mL) on the vial and keep it in the fridge.

Storing a mixed vial

  • Keep it refrigerated at 2–8 °C (36–46 °F). Don’t freeze it.
  • Protect it from light and heat.
  • Follow the beyond-use date on your pharmacy label. If the liquid turns cloudy or has particles, don’t use it.

Please read before injecting

Always confirm your dose, concentration and syringe markings with your prescriber or pharmacist. Small calculation errors can have serious consequences. This tool does math — it doesn’t tell you what dose to take.

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