Peptide Reconstitution & Dosing
Calculate per-injection dose, injection volume, and vial usage for weight-based peptide protocols (e.g., growth hormone-releasing peptides, BPC-157).
Example: 0.1 mg/kg for GHRP-2.
Common vial sizes: 2 mg, 5 mg, 10 mg.
Volume of bacteriostatic water used for reconstitution.
Dosing Summary
Per injection
8.00 mg
Volume: 3.20 mL at 2.50 mg/mL.
Daily total
8.00 mg/day
1 injection(s) per day.
Vial utilization
0.6 doses/vial
≈ 0.6 day(s) per vial.
How to Use This Calculator
Confirm protocol
Obtain the prescribed mg/kg dosing schedule and injection frequency from the clinician or protocol.
Reconstitute accurately
Add measured bacteriostatic water to the vial, letting the powder dissolve gently (avoid shaking).
Draw correct volume
Use the output volume for each injection. Track vial usage to plan reorders.
Formula
Per dose (mg) = weight (kg) × mg/kg per injection.
Intended for educational planning; verify against specific peptide prescribing information.
Frequently Asked Questions
Can I round the injection volume?
Keep to 0.01 mL precision when possible. Minor rounding (±0.01 mL) is typically acceptable but confirm with the prescriber.
How long does a vial last after reconstitution?
Most peptides: refrigerate and use within 14–30 days. Check pharmacy labeling for exact beyond-use date.
What if multiple peptides are used?
Calculate each separately; never mix peptides in the same vial unless directed by pharmacy.
Can I adjust doses myself?
No. Dose changes should be directed by a licensed healthcare provider experienced with peptide therapies.
Any injection technique tips?
Use sterile insulin syringes, rotate injection sites, and dispose of sharps in approved containers.