Last updated: May 2026
BPC-157 + TB-500 Blend Calculator
About this calculator
The BPC-157 + TB-500 blend calculator applies the reconstitution formula to each vial independently (Concentration = Vial content (mcg) ÷ BAC water (mL)) and outputs individual draw volumes plus the combined syringe total. Designed for users drawing from two separate reconstituted vials into one syringe. Free, instant, no login.
How to use this calculator
You will need details for both vials: the size of each (5 mg or 10 mg), how much bacteriostatic water you added to each, and your intended dose for each peptide in mcg.
Enter the BPC-157 vial details first, then the TB-500 vial details. Concentrations are derived live from your inputs. Draw volumes update instantly as you adjust doses.
Draw from the BPC-157 vial first, then from the TB-500 vial into the same syringe. If the combined draw exceeds 1 mL, the calculator will warn you — consider splitting into two injections or reconstituting at a higher concentration.
Worked example
Example — 250 mcg BPC-157 + 500 mcg TB-500, both 5 mg vials, 2 mL BAC water each
BPC-157 vial: 5 mg (5,000 mcg) ÷ 2 mL = 2,500 mcg/mL
TB-500 vial: 5 mg (5,000 mcg) ÷ 2 mL = 2,500 mcg/mL
BPC-157 draw: 250 ÷ 2,500 = 0.10 mL
TB-500 draw: 500 ÷ 2,500 = 0.20 mL
BPC-157: 0.10 mL = 10 units
TB-500: 0.20 mL = 20 units
Total in syringe: 0.30 mL = 30 units
Concentration reference table
Concentration (mcg/mL) by vial size and BAC water added. Applies equally to both BPC-157 and TB-500 vials:
| BAC water added | 5 mg vial (5,000 mcg) | 10 mg vial (10,000 mcg) |
|---|
| 1 mL | 5,000 mcg/mL | 10,000 mcg/mL |
| 2 mL | 2,500 mcg/mL | 5,000 mcg/mL |
| 3 mL | 1,667 mcg/mL | 3,333 mcg/mL |
| 4 mL | 1,250 mcg/mL | 2,500 mcg/mL |
| 5 mL | 1,000 mcg/mL | 2,000 mcg/mL |
Frequently asked questions
How do I draw a BPC-157 and TB-500 blend from separate vials?
Because BPC-157 and TB-500 are typically sold as separate lyophilised vials, each reconstituted independently with its own BAC water, you draw from each vial separately into the same syringe. First calculate each peptide's draw volume using its own vial concentration (total mcg ÷ mL of BAC water added). Then draw the BPC-157 amount first, followed by the TB-500 amount into the same syringe. The combined volume in the syringe is the sum of both draws. This calculator computes both draw volumes and the combined total. If the total exceeds 1 mL, consider splitting the dose into two separate injections.
What are typical dose ratios for BPC-157 and TB-500?
BPC-157 is commonly used at doses of 200–500 mcg per injection. TB-500 is commonly used at doses of 500–2,000 mcg per injection, often in a higher ratio to BPC-157. A common example is a 1:2 or 1:4 ratio of BPC-157 to TB-500 (for instance, 250 mcg BPC-157 with 500 mcg TB-500). Pre-mixed blend vials sold by some research suppliers may combine both peptides at a fixed ratio in one vial — this calculator is for the two-vial approach where each is reconstituted separately. Always record your exact doses and concentrations for each session.
Can I mix BPC-157 and TB-500 in the same syringe?
Yes, drawing both peptides into the same syringe is the standard method for combined injections when using separate vials. Draw the calculated volume from the BPC-157 vial first, then insert the same syringe needle into the TB-500 vial and draw the TB-500 volume. Both peptides are now in the syringe. The total volume should be within your syringe capacity — typically 1 mL for standard insulin syringes. If the combined draw exceeds 1 mL, the calculator will flag a warning and you should consider splitting into two separate injections or adjusting your BAC water volume to increase concentration.
What is TB-500 and how does its dosing compare to BPC-157?
TB-500 (Thymosin Beta-4) is a synthetic peptide used in research contexts. Like BPC-157, it is sold as a lyophilised powder in vials and must be reconstituted with bacteriostatic water before use. TB-500 vials typically come in 5 mg or 10 mg sizes, identical to BPC-157 format. Individual doses are measured in mcg and TB-500 doses tend to be larger than BPC-157 doses. The reconstitution and draw calculation method is identical: divide vial content (mcg) by BAC water (mL) to get concentration, then divide dose by concentration to get draw volume. This calculator handles both peptides using the same formula independently for each vial.
Blend guide
Learn about dual-vial reconstitution, draw order, dose ratios, and handling combined volumes over 1 mL in the full reference guide. BPC-157 + TB-500 Blend Guide →
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