TB-500 reconstitution & dose calculator
Enter your TB-500 vial size, the BAC water you added and your dose to see the units to draw on a U-100 insulin syringe.
- Strength
- 2.5 mg/mL
- 1 unit holds
- 25 mcg
TB-500 reconstitution chart: units to draw by vial size and BAC water
Find the row for the mg on your vial and the water you added. Amounts are from the range on our TB-500 page, 2 to 2.5 mg. Units are on a U-100 insulin syringe, where 100 units is 1 mL.
| Vial | BAC water | Strength | Units to draw for | |
|---|---|---|---|---|
| 2 mg | 2.5 mg | |||
| 2 mg | 1 mL | 2 mg/mL | 100 | more than the vial |
| 2 mL | 1 mg/mL | 200* | more than the vial | |
| 3 mL | 0.67 mg/mL | 300* | more than the vial | |
| 5 mg | 1 mL | 5 mg/mL | 40 | 50 |
| 2 mL | 2.5 mg/mL | 80 | 100 | |
| 3 mL | 1.67 mg/mL | 120* | 150* | |
| 10 mg | 1 mL | 10 mg/mL | 20 | 25 |
| 2 mL | 5 mg/mL | 40 | 50 | |
| 3 mL | 3.33 mg/mL | 60 | 75 | |
* Over 100 units: more than a 1 mL syringe holds in one draw. † Under 2 units: hard to measure; more water makes the draw bigger. Arithmetic from the numbers in each row. Pepdex does not pick a dose for you.
What to know about TB-500 before you mix it
TB-500 is a fragment of Thymosin Beta-4 studied for its role in cell migration and tissue repair.
- How it is supplied
- There is no approved TB-500 product. It comes as freeze-dried powder and is often sold blended with BPC-157.
- Common vial sizes
- 5 mg, 10 mg. Work from the mg printed on your own vial.
- Half-life
- Listed as about 2 to 3 days, without solid human data behind it. Shots are usually once or twice a week rather than daily.
- Usual schedule on our page
- Loading 2x/wk → maintenance 1x/wk.
- FDA status
- Not FDA approved for any indication.
- Evidence in one line
- 0 phase 3 trials and 7 indexed randomised-trial records, none of them of TB-500 for injury repair. Source: Pepdex evidence index; counts are indexed PubMed records, not deduplicated trials; PubMed query for thymosin beta-4 / TB-500.
What people track with TB-500
- Loading weeks (twice a week) versus maintenance (once a week)
- Which days the shots happened
- Recovery or mobility notes for the injury you are tracking
The common TB-500 mix-up
Whole-mg amounts. A 2.5 mg shot from a 5 mg vial mixed with 2 mL is 100 units, a full 1 mL syringe. With 1 mL of water it is 50 units.
Full TB-500 entry: evidence, side effects, FDA and WADA status
How long a TB-500 vial lasts
A 10 mg vial at 2.5 mg a shot holds 4 shots. Taken twice a week, that is about 2 weeks. Shots per vial for each size:
| Vial | At 2 mg | At 2.5 mg |
|---|---|---|
| 2 mg | 1 shot | under 1 |
| 5 mg | 2 shots | 2 shots |
| 10 mg | 5 shots | 4 shots |
TB-500 reconstitution questions
- How much BAC water (reconstitution solution) do I add to a 10 mg TB-500 vial?
- Any amount works for the math; it only changes the strength. 10 mg in 1 mL is 10 mg/mL, in 2 mL 5 mg/mL, and in 3 mL 3.33 mg/mL. More water gives a bigger draw that is easier to read. If your product came with mixing directions, those set the volume.
- How many units is 2.5 mg of TB-500?
- It depends on how much water is in the vial. From a 10 mg vial mixed with 2 mL, 2.5 mg is 50 units (0.5 mL). With 1 mL it is 25 units; with 3 mL, 75 units.
- How many 2.5 mg doses are in a 10 mg TB-500 vial?
- 4. Taken twice a week, that lasts about 2 weeks. The water you add does not change the count, only the size of each draw.
- Is TB-500 the same as BPC-157?
- No. TB-500 is a Thymosin Beta-4 fragment studied for body-wide cell migration; BPC-157 is a gastric peptide studied for more local effects. They are different molecules, and their doses are not interchangeable.
Related calculators
Educational reference. Pepdex does not sell peptides or recommend vendors. The calculator and charts convert amounts into syringe units; whether an amount is right for you is a question for a qualified provider.