TB-500 reconstitution calculator

TB-500 at a glance

10mg vial + 3mL BAC water = 15 units = 500mcg — Frequency: daily or 2-3x weekly — Best taken: any consistent time, injection sites commonly rotated

Full TB-500 dosing reference — reconstitution per vial size, dose-to-units table, side effects and sources.

What it does

• Synthetic version of a fragment of Thymosin Beta-4, a naturally occurring protein.
• Animal and cell studies show faster wound healing, new blood vessel growth, and reduced inflammation.
• Works partly by regulating actin, a protein involved in cell movement and tissue repair.
• Human evidence is very limited; most research is in animal and cell models.

Notes

Listed titration schedule: weeks 1-2 500mcg, weeks 3-4 600mcg, weeks 5-8 750mcg, weeks 9-12 1000mcg. Typical cycle 8-12 weeks (up to 16). Listed second tier, from community protocols: 2-2.5mg (about 60-75 units) 2-3x weekly for 4-6 weeks, then 0.75-2mg (about 22-60 units) 1-2x weekly. All vial sizes reconstitute to 3.33mg/mL (33.3mcg/unit) so the syringe reads the same regardless of size.

Side Effects

• Injection site redness or discomfort.
• Mild fatigue, occasional headache.
• Brief lightheadedness or mood changes.
• Not FDA-approved; no long-term safety data.

TB-500 vial sizes and concentrations

Standard water for each TB-500 vial size in the Dosify Me data, and the concentration it gives. One unit is 0.01 mL on a U-100 insulin syringe.

Syringe units for the listed quantities, by vial size

Worked example for TB-500

1. The example vial: 10 mg of TB-500, mixed with 3.00 mL of bacteriostatic water.
2. Concentration: 10 mg ÷ 3.00 mL = 3.33 mg/mL.
3. One syringe unit is 0.01 mL, so it holds 3.33 mg/mL × 0.01 mL = 0.033 mg (33.33 mcg).
4. Example quantity: 500 mcg = 0.5 mg.
5. Volume: 0.5 mg ÷ 3.33 mg/mL = 0.15 mL.
6. Syringe reading: 0.15 mL × 100 = 15 units.

Label numbers from the Dosify Me data, used to show the arithmetic. Not a recommendation of any quantity.

Frequently asked

How many units is 500 mcg of TB-500?

At 3.33 mg/mL (the concentration every vial size mixes to), 500 mcg of TB-500 is 15.0 units on a 100-unit insulin syringe (0.150 mL).

How many units is 600 mcg of TB-500?

At 3.33 mg/mL (the concentration every vial size mixes to), 600 mcg of TB-500 is 18.0 units on a 100-unit insulin syringe (0.180 mL).

How many units is 750 mcg of TB-500?

At 3.33 mg/mL (the concentration every vial size mixes to), 750 mcg of TB-500 is 22.5 units on a 100-unit insulin syringe (0.225 mL).

How much bacteriostatic water do I add to a 5 mg vial of TB-500?

1.50 mL, which gives 3.33 mg/mL. Other vial sizes use proportionally more or less water so the syringe reads the same.

How much bacteriostatic water do I add to a 10 mg vial of TB-500?

3.00 mL, which gives 3.33 mg/mL. Other vial sizes use proportionally more or less water so the syringe reads the same.

How often is TB-500 taken?

Daily or 2-3x weekly. Any consistent time, injection sites commonly rotated Typical cycle: 8–12 weeks on, ~2 weeks off; repeat 2–3×/year.

Related pages and guides

• TB-500 dosing reference
• How many units is 250 mcg?
• How much bacteriostatic water for a 5 mg vial?
• U-100 vs U-50 insulin syringe for peptides
• Peptide storage and refrigeration
• All peptide guides

Other calculators

General peptide calculator · BAC water calculator · Peptide dosing chart · How to reconstitute peptides · mcg to units chart