Peptide Reconstitution Calculator
Draw this amount:10units
Concentration2.5 mg/mL
Volume to inject0.10 mL
Doses per vial20
How to Use This Peptide Calculator
1
Enter Peptide Amount
Input the total milligrams (mg) in your peptide vial. Common sizes: 2mg, 5mg, 10mg.
2
Add Water Volume
Enter how much bacteriostatic water (BAC water) you'll add. More water = easier to measure small doses.
3
Set Your Dose
Enter your desired dose in micrograms (mcg). The calculator shows exact syringe units to draw.
How Hexarelin Is Dosed
Hexarelin is a six-amino-acid growth-hormone-releasing peptide and one of the more potent growth-hormone secretagogues in its class.
A human dose-response study measured a plasma half-life of roughly 55 minutes (about 0.9 hours) after intravenous dosing (Ghigo et al., 1994, PMID 7957536). One well-documented property of hexarelin is desensitization, meaning the growth-hormone response tends to fade with continuous daily use.
Community protocols use roughly 100 to 200 mcg per subcutaneous injection, one to three times daily, usually from a 5 mg vial. The calculator converts your chosen mcg dose into exact syringe units.
Hexarelin is a research compound. The doses shown are drawn from published trials or community protocols and are not clinically validated for self-administration. This tool is educational only and is not medical advice or a dosing recommendation.
Hexarelin Dosing Reference
| Peptide | Common Vial | Cited Dose | BAC Water | Units to Draw |
|---|---|---|---|---|
| Hexarelin | 5mg | 100mcg | 2mL | 4 units |
| Hexarelin | 5mg | 200mcg | 2mL | 8 units |
| GHRP-6 | 5mg | 200mcg | 2mL | 8 units |
Community protocol figures, not clinically validated. For education only.
The Math Behind Peptide Reconstitution
Concentration formula:
Concentration (mg/mL) = Peptide (mg) ÷ Water (mL)Units to draw:
Units = [Dose (mcg) ÷ 1000] ÷ Concentration × 100Example: BPC-157 250mcg dose
- 5mg vial + 2mL BAC water = 2.5 mg/mL
- 250mcg = 0.25mg
- 0.25mg ÷ 2.5 mg/mL = 0.10mL
- 0.10mL × 100 = 10 units on insulin syringe
Printable reconstitution chart, free
Get the reference chart by email (concentrations, µg per 10 units, formulas, storage) to keep next to your prep space.
We will never share your email.
Need More Than a Calculator?
Track your protocol with Peptide Lab
The calculator is just the start. The app is free and includes:
- Interactive body map 14 sites, smart rotation
- Weight & effects tracking correlate your results with your protocol
- Half-life curves optimize your timing
- 10 training chapters master reconstitution
Free app for lifePremium (unlimited peptides and injections, reminders): $49 one-time payment
Discover Peptide LabUnderstanding Insulin Syringe Units
10 units = 0.10 mL
Quick Reference
- 100 units = 1 mL (full syringe)
- 50 units = 0.5 mL (half syringe)
- 10 units = 0.1 mL (1/10th syringe)
- 1 unit = 0.01 mL
Standard insulin syringes are U-100, meaning 100 units per mL. This calculator uses this standard.
Frequently Asked Questions
What is the half-life of hexarelin?
A human study measured a plasma half-life of about 55 minutes (roughly 0.9 hours) after intravenous dosing (Ghigo et al., 1994, PMID 7957536). This was measured by the IV route, so the duration after subcutaneous injection may differ.
Does hexarelin lose effect over time?
Hexarelin is known for desensitization, meaning the growth-hormone response tends to decrease with continuous daily use. This is a commonly discussed reason people limit continuous dosing.
How is hexarelin different from GHRP-6?
Both are growth-hormone-releasing hexapeptides. Hexarelin is often described as more potent and has been studied for cardiac effects, while GHRP-6 is strongly associated with appetite stimulation. Neither is clinically validated for self-use.
What is bacteriostatic water (BAC water)?
Bacteriostatic water is sterile water containing 0.9% benzyl alcohol as a preservative. It prevents bacterial growth, allowing multi-use of reconstituted peptides for 4-6 weeks when refrigerated.
How much water should I add to my vial?
Common choices are 1mL, 2mL, or 3mL. More water makes small doses easier to measure accurately but means larger injection volumes. 2mL is a good balance for most peptides.
What does "units" mean on an insulin syringe?
Insulin syringes use "units" as measurements. Standard U-100 syringes have 100 units per 1mL, so 10 units = 0.10mL and 50 units = 0.50mL.
How long do reconstituted peptides last?
With bacteriostatic water, most peptides remain stable for 4-6 weeks when refrigerated at 2-8 degrees Celsius. With sterile water (no preservative), use within 24-48 hours.
Is this calculator free to use?
Yes, completely free with no signup required. For injection tracking, body maps and protocol management, see our full Peptide Lab app.