TB-500 reconstitution calculator.
TB-500 is sold as 2 mg, 5 mg, and 10 mg vials, and the amounts discussed for it run in milligrams rather than the hundreds of micrograms typical of the healing peptides it gets paired with. That combination is where the arithmetic mistakes happen.
Reference range often cited for TB-500: 2000–5000 mcg, shown for orientation only, not a recommendation. Enter your own target below. Read the evidence →
Each unit on a 100u · 1.0 mL syringe ≈ 10 mcg of this solution.
Show the math
More water → lower concentration → more units for the same amount.
What changes the math for TB-500.
- Targets here are usually written in mg. 2 mg on a 5 mg vial in 2 mL (2,500 mcg/mL) is 80 units, most of a 100 unit syringe, which surprises people used to 10 unit draws.
- Because the per-draw amount is large relative to the vial, a 5 mg vial can be a small number of draws. Doses per vial is often the number that actually decides the water volume.
- TB-500 is commonly mixed alongside BPC-157. They are different concentrations in different vials, so units for one never transfer to the other. The blend calculator handles the two together.
Formats and worked examples.
How TB-500 is actually administered, with the concentration arithmetic written out. Amounts in these tables are illustrative examples of the math, never a recommendation.
TB-500: research formats
Choose the format you are researching to see route-specific notes.
Primary research format; sometimes administered IM. Larger doses than most peptides.
TB-500 is typically sold as a 5 mg or 10 mg vial. A common reconstitution is 5 mg + 2.5 mL BAC water for 2,000 mcg/mL (2 mg/mL). Research designs frequently use doses in the low-mg range per injection, spaced weekly or biweekly, making the vial math different from most other peptides.
The larger injection volumes typical in TB-500 research sometimes favour intramuscular (IM) administration over SC to accommodate volume and reduce discomfort. Spread across multiple SC sites is also used.
FAQ.
How do I convert a TB-500 amount in mg to syringe units?
Convert to mcg first, since 1 mg is 1,000 mcg, then divide by the mcg per unit of your solution. The calculator accepts mg directly and does both steps, showing the intermediate figures under the math view.
Why does my draw fill most of the syringe?
Because the target is milligram scale against a concentration set up for microgram scale. Either use less water to concentrate the vial, or accept the larger volume. Both are the same amount of peptide, just carried in more or less liquid.
Can I reconstitute TB-500 and BPC-157 in the same vial?
People do combine them in one syringe, but mixing two lyophilized compounds into one vial fixes their ratio permanently and makes each one impossible to change independently. The blend calculator is built for keeping them separate and drawing both.
This page is arithmetic on numbers you enter. It does not recommend an amount of TB-500, and nothing here is medical advice. For what the published evidence actually supports, read the TB-500 profile, and for regulatory status see is TB-500 legal. Reviewed June 1, 2026.
Different question? The general reconstitution calculator covers every compound on the site, the blend calculator handles multi-peptide stacks, and vial longevity turns a vial into weeks of supply.
PepCue remembers your TB-500 vial, concentration, and draw, then tracks every dose against it. Free.