GHRP-2 Dosing Protocol: 10 mg Vial — Extended Supply Dosing Guide
Quickstart highlights
GHRP-2 at 300 µg produces approximately 5–7 ng/mL peak GH serum concentrations when injected in fasted state; combined with CJC-1295 (300 µg simultaneously), peak GH rises to approximately 15–20 ng/mL.
- Concentration: 2 mg/mL (10 mg vial + 5 mL bacteriostatic water).
- At 2 mg/mL: 200 µg = 10 units, 300 µg = 15 units per injection.
- At 300 µg 3x daily, one 10 mg vial lasts approximately 11 days.
- Monitor monthly morning cortisol at 2–3x daily dosing frequency.
- Refrigerate; use within 28 days.
Dosing table
For educational reference only. Your prescribing provider may adjust doses based on your clinical profile and response.
| Week | Dose (µg) | Units | Frequency | Notes |
|---|---|---|---|---|
| 1-4 | 200 | 10 | 2x daily (morning and before bed) | 200 µg 2x daily — 10 units per injection; 10 mg vial provides ~25 doses (12–13 days at 2x daily) |
| 5-12 | 300 | 15 | 2–3x daily (fasted) | 300 µg per injection — 15 units; 33 doses per vial (~11 days at 3x daily) |
Your free GHRP-2 tracker
- Dose reminders
- Injection logging
- Cycle progress
Reconstitution steps
- Draw 5 mL bacteriostatic water in two 2.5 mL draws; inject slowly down vial wall.
- Swirl gently until fully dissolved; do not shake.
- Final concentration: 2 mg/mL. Label with date; refrigerate at 2–8 °C. Use within 28 days.
Supplies needed
12-week plan
- 4 vials
- 84 syringes
- 20 mL bac water
- 84 alcohol swabs
Protocol overview & cycle notes
Sustain elevated GH pulse frequency through 2–3x daily GHRP-2 injections using the efficient 10 mg vial, designed for patients who have established GHRP-2 tolerance and require a high-volume supply.
Cycle length: 12 weeks on.
Off-cycle: 4–6 weeks off; check morning cortisol before restarting.
Storage & handling
Injection & tracking tips
- At 300 µg 3x daily, one 10 mg vial lasts ~11 days — plan 8 vials for a full 12-week cycle.
- GHRP-2 at 2–3x daily frequency should be monitored with monthly morning cortisol labs.
- Preferentially inject in the morning fasted, pre-workout (fasted 2+ hours), and at bedtime.
Tracking
Logging helps you and your provider spot patterns and adjust dose or timing.
- Track morning serum cortisol monthly at 2–3x daily dosing.
- Measure IGF-1 every 6 weeks.
- Record subjective hunger and energy levels after each injection for the first 4 weeks.
How this works & references
Sources
- Source: Bowers CY et al. — GHRP-2: GH-releasing activity in humans. J Clin Endocrinol Metab. 1990
- Source: Arvat E et al. — GHRP-2 vs. GHRP-6: cortisol and GH dynamics. J Endocrinol Invest. 1997
- Pharmacokinetics and pharmacodynamics of growth hormone-releasing peptide-2: a phase I study in children. Pihoker C et al. — J Clin Endocrinol Metab — 1998
- Effects of eight months treatment with graded doses of a growth hormone (GH)-releasing peptide in GH-deficient children. Mericq V et al. — J Clin Endocrinol Metab — 1998
Frequently asked questions
How many 10 mg vials do I need for a 12-week cycle at 300 µg 3x daily?
Is 3x daily GHRP-2 safe long-term?
Why is the 10 mg vial better for high-frequency use than the 5 mg?
Should I rotate injection sites with GHRP-2?
Does GHRP-2 affect insulin sensitivity?
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View protocolThis content is for informational purposes only and does not constitute medical advice. Consult a licensed healthcare provider before starting any peptide therapy. Dosing and protocols may vary by formulation and prescriber.