GHRP-6 Dosing Calculator
GHRP-6: Ghrelin receptor agonist for GH release.
Pre-filled with the most-reported community reconstitution protocol for GHRP-6. See how 1 mL and 2 mL of bacteriostatic water change concentration and syringe-draw volume, then adjust the calculator below for your own vial.
Quick answer · Community-reported standard
A 5 mg vial of GHRP-6 reconstituted with 1 mL of bacteriostatic water yields a concentration of 2.50 mg/mL. At that concentration, a 100 mcg dose of GHRP-6 equals 4 units on a U-100 insulin syringe (0.040 mL). GHRP-6 is typically administered once daily via subcutaneous.
GHRP-6 reconstitution: 1 mL vs 2 mL bac water
Bacteriostatic water volume is flexible. Less water means higher concentration and smaller injection volumes; more water means lower concentration and easier dose precision. Both options below are valid for a 5 mg vial.
| BAC water added | Concentration | Volume per 100 mcg dose | Draw on U-100 syringe (units) |
|---|---|---|---|
| 1 mL | 5.00 mg/mL | 0.020 mL | 2 units |
| 2 mL | 2.50 mg/mL | 0.040 mL | 4 units |
Calculate your GHRP-6 dose
Alternative GHRP-6 protocols
Beyond the default above, GHRP-6 is also reported in the following protocols. Use these as starting points and recalculate with the tool above.
GHRP-6 + GHRH Combo Protocol
Community- Dose
- 100 mcg GHRP-6 + 100 mcg Mod GRF 1-29
- Frequency
- 2-3 times daily
- Duration
- 8-16 weeks
- Route
- Subcutaneous
Combined with GHRH analog for synergistic GH release; considered the most potent GHRP + GHRH combination
Bulking/Appetite Enhancement Protocol
Community- Dose
- 100-200 mcg
- Frequency
- 2-3 times daily, 30 minutes before meals
- Duration
- 4-8 weeks
- Route
- Subcutaneous
Timed before meals to leverage intense appetite stimulation; used specifically during bulking phases
Pre-Bed Recovery Protocol
Community- Dose
- 100-200 mcg
- Frequency
- Once daily before bed
- Duration
- 8-12 weeks
- Route
- Subcutaneous
Single dose protocol for those who want to minimize appetite effects to nighttime only
GH stimulation test (diagnostic, IV)
Clinical- Dose
- 1 mcg/kg
- Frequency
- Single IV bolus
- Duration
- Acute diagnostic test
Used as a provocative test for GH deficiency assessment
GH secretion research (SC)
Clinical- Dose
- 1-2 mcg/kg
- Frequency
- 1-3 times daily
- Duration
- Varies by study protocol
Subcutaneous injection; GH peak at 15-30 minutes
GHRP-6 reconstitution & storage
Lyophilized GHRP-6 is typically reconstituted with bacteriostatic water or sterile water for injection. Research-grade vials (commonly 5 mg) are reconstituted to desired concentration. Gentle swirling rather than vigorous shaking is recommended.
Lyophilized GHRP-6 should be stored at -20 degrees C or below for long-term storage. Reconstituted solutions should be refrigerated at 2-8 degrees C and used within 2-4 weeks. Protect from light and repeated freeze-thaw cycles.
GHRP-6 dosing FAQ
How much bacteriostatic water should I add to a 5 mg vial of GHRP-6?
The community standard is 1 mL of bacteriostatic water for a 5 mg GHRP-6 vial. That gives a concentration of 2.50 mg/mL, so a 100 mcg dose is 4 units on a U-100 insulin syringe. Adding 1 mL instead doubles the concentration to 5.00 mg/mL and halves the draw to 2 units. Less water = smaller injection volume but harder to measure precisely.
How many syringe units is a 100 mcg dose of GHRP-6?
On a standard U-100 insulin syringe, a 100 mcg dose of GHRP-6 is 4 units when the 5 mg vial is reconstituted with 1 mL of bacteriostatic water (2.50 mg/mL). If you use 1 mL of bac water instead, draw 2 units (5.00 mg/mL).
What is the standard GHRP-6 dose?
Community-reported protocols for GHRP-6 typically use 100 mcg–200 mcg once daily via Subcutaneous. 100 mcg is a common starting dose. Injected on empty stomach; produces strong GH release with significant appetite increase within 20-30 minutes
How long does a vial of GHRP-6 last at 100 mcg once daily?
A 5 mg vial of GHRP-6 contains roughly 50 doses at 100 mcg per injection. At once daily dosing, that is approximately 50 days (about 7 weeks) of supply per vial. Reconstituted GHRP-6 should generally be used within 28 days when refrigerated.
Where do you inject GHRP-6?
GHRP-6 is typically injected subcutaneous. Common sites reported in the literature and by users include: Subcutaneous (abdomen, deltoid region), Intravenous (clinical research settings), Intranasal (research, lower bioavailability). Rotate sites with each injection to reduce localized irritation.
Can I use sterile water instead of bacteriostatic water for GHRP-6?
Bacteriostatic water (containing 0.9% benzyl alcohol as a preservative) is strongly preferred for multi-dose vials like GHRP-6 because it inhibits microbial growth and lets a single vial be used over multiple weeks. Sterile water has no preservative and should generally be reserved for single-use preparations only.
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Medical Disclaimer
This website is for educational and informational purposes only. The information provided is not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before using any peptide or supplement.