*Calculation based on standard insulin syringe units where 1mL = 100 units.
How to Use the BPC-157 Dosage Calculator
Calculating the correct dosage for BPC-157 (Body Protective Compound-157) is critical for research accuracy and safety. Since BPC-157 usually arrives as a lyophilized (freeze-dried) powder in a vial, it must be reconstituted with bacteriostatic water before use. This calculator helps you determine exactly how many "units" to pull on an insulin syringe to reach your target microgram (mcg) dose.
Step-by-Step Reconstitution Guide
Identify Vial Size: Most BPC-157 vials come in 5mg or 10mg sizes.
Add Bacteriostatic Water: Gently inject bacteriostatic water into the vial. Common amounts are 2mL or 3mL. Do not shake the vial; swirl it gently until clear.
Determine Target Dose: Research dosages typically range from 250mcg to 500mcg per administration.
Input Data: Enter these values into the calculator above to see your specific syringe markings.
Example Calculation
If you have a 5mg vial and add 2mL of water:
Total micrograms = 5,000 mcg.
Concentration = 2,500 mcg per 1mL.
On a U-100 syringe (100 units), each unit equals 25mcg.
To get a 250mcg dose, you would draw to the 10 unit mark.
Common BPC-157 Reference Chart (2mL Reconstitution)
Vial Size
Target Dose
Units (on U-100 Syringe)
5mg
250mcg
10 Units
5mg
500mcg
20 Units
10mg
250mcg
5 Units
10mg
500mcg
10 Units
Important Safety Considerations
Always ensure you are using sterile techniques during reconstitution. Bacteriostatic water contains a small amount of benzyl alcohol to prevent bacterial growth, making it suitable for multiple draws from the same vial. Store your reconstituted BPC-157 in the refrigerator to maintain stability. Note: This tool is for educational and research purposes only. Consult with a medical professional before starting any peptide protocol.
function calculateBPC() {
var vialMg = parseFloat(document.getElementById("vialSize").value);
var waterMl = parseFloat(document.getElementById("bacWater").value);
var targetMcg = parseFloat(document.getElementById("targetDose").value);
var syringeCapacity = parseFloat(document.getElementById("syringeType").value);
if (isNaN(vialMg) || isNaN(waterMl) || isNaN(targetMcg) || vialMg <= 0 || waterMl <= 0 || targetMcg <= 0) {
alert("Please enter valid positive numbers for all fields.");
return;
}
// Convert mg to mcg
var totalMcg = vialMg * 1000;
// Calculate concentration (mcg per mL)
var concentration = totalMcg / waterMl;
// Standard insulin syringe logic: 1mL = 100 units
// Mcg per unit = Concentration / 100
var mcgPerUnit = concentration / 100;
// Calculate units to draw
var unitsToDraw = targetMcg / mcgPerUnit;
// Calculate volume in mL
var volumeMl = targetMcg / concentration;
// Display Results
document.getElementById("totalMcg").innerHTML = totalMcg.toLocaleString();
document.getElementById("concentration").innerHTML = concentration.toLocaleString();
document.getElementById("mcgPerUnit").innerHTML = mcgPerUnit.toFixed(2);
document.getElementById("unitsToDraw").innerHTML = unitsToDraw.toFixed(1);
document.getElementById("volumeMl").innerHTML = volumeMl.toFixed(3);
document.getElementById("dosageResult").style.display = "block";
}