TB-500: which line to draw to

Enter your TB-500 vial amount, the water you added and your dose. TB-500 is dosed in mg; the syringe shows exactly where to stop. New to this?

Your line shows up here.

Fill in the vial, water and dose boxes.

Animal studies only. No human trials of TB-500 itself.

In the vial

Water added

Your dose

mgmcg

Syringe

What do these boxes mean?

In the vial: The amount of powder in the vial before you add anything, e.g. “5 mg”. It’s on the label or the box.
Water added: How much bacteriostatic water you mixed in. It doesn’t change how much peptide you get, only how strong the mix is. More water makes each dose a bigger amount that’s easier to measure.
Your dose: How much peptide you want per injection, from your prescription or plan. Not the number of units on the syringe; that’s what we work out.
Syringe: Check the packet: 1 mL, 0.5 mL or 0.3 mL (sometimes written 100, 50 or 30 units). All are U-100: 100 units is 1 mL. Smaller syringes measure small doses more accurately.

When does this vial expire?

Mixed on

Good for (days)

TB-500 at a glance

Evidence: Animal studies only. No human trials of TB-500 itself.
Vial sizes: 2, 5, 10 mg
Usual dose range: 2–10 mg
How often: 2×/wk load, 1×/wk maintenance
Unmixed: Freezer −20°C
After mixing: Fridge 2–8°C, use within 28 days

TB-500 units to mg chart

Syringe units on any U-100 insulin syringe (100 units = 1 mL), worked out by the same engine as the calculator. Your own vial and water may differ: use the calculator for your numbers.

2 mg vial + 1 mL water (2 mg per mL)
Dose	Units	mL
2 mg	100	1
2.5 mg	More than the vial holds
5 mg	More than the vial holds
10 mg	More than the vial holds

5 mg vial + 2 mL water (2.5 mg per mL)
Dose	Units	mL
2 mg	80	0.8
2.5 mg	100	1
5 mg	More than a 1 mL syringe
10 mg	More than the vial holds

10 mg vial + 3 mL water (3.3 mg per mL)
Dose	Units	mL
2 mg	60	0.6
2.5 mg	75	0.75
5 mg	More than a 1 mL syringe
10 mg	More than a 1 mL syringe

TB-500 questions

How many units is 2 mg of TB-500?

With a 2 mg vial mixed with 1 mL of bacteriostatic water, 2 mg is 100 units (1 mL) on a U-100 insulin syringe. A different vial size or amount of water changes this, so check it with your own numbers.

How much water do I add to a 2 mg TB-500 vial?

1 mL of bacteriostatic water is common, which makes 2 mg per mL. More water makes each dose a bigger amount that is easier to measure; it doesn't change how much is in the vial.

How long does mixed TB-500 last?

Once mixed, keep it at fridge temperature, 2–8°C and use it within 28 days. Unmixed powder: freezer −20°c.

What is TB-500?

TB-500 is a lab-made fragment of thymosin beta-4, a protein found in most human cells that’s involved in cell movement and repair. It isn’t approved for use in people, and it’s banned in tested sport.

What the research shows

Animal and lab studies link thymosin beta-4 to wound healing and new blood vessel growth. There are no completed human trials of TB-500 itself.

Milligrams, not micrograms

Unlike BPC-157, TB-500 doses are quoted in milligrams, so the numbers look much bigger. Doses online are often described as a ‘loading’ phase followed by ‘maintenance’; those schedules come from forums, not trials.

Sources

Sosne G et al. Thymosin beta4 and its degradation products in wound repair. Ann N Y Acad Sci, 2007.