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Reviewed by MyPeptideMatch Editorial TeamLast reviewed February 2026Updated February 2026

GHRP-2 Dosing Protocol: 10 mg Vial — Extended Supply Dosing Guide

High-volume GHRP-2 supply from the 10 mg vial for patients on established 200–300 µg 2–3x daily protocols.

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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.

WeekDose (µg)UnitsFrequencyNotes
1-4200102x 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)
5-12300152–3x daily (fasted)300 µg per injection — 15 units; 33 doses per vial (~11 days at 3x daily)

Reconstitution steps

  1. Draw 5 mL bacteriostatic water in two 2.5 mL draws; inject slowly down vial wall.
  2. Swirl gently until fully dissolved; do not shake.
  3. 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
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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

Lyophilized: store below 25 °C. Reconstituted at 2 mg/mL: refrigerate 2–8 °C; use within 28 days. At 300 µg 3x daily, one 10 mg vial lasts approximately 11 days.

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.
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How this works & references

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. The 10 mg vial provides approximately 11 days at 300 µg 3x daily, making 8–9 vials necessary for a full 12-week cycle at maximum frequency.

Sources

Frequently asked questions

How many 10 mg vials do I need for a 12-week cycle at 300 µg 3x daily?
At 300 µg × 3 × 84 days = 75.6 mg total. At 10 mg/vial, you need approximately 8 vials for the full 12-week cycle.
Is 3x daily GHRP-2 safe long-term?
Chronic 3x daily use (beyond 12 weeks) risks HPA axis habituation and persistent cortisol elevation. The 12-week cycle with 4–6 week off-periods is strongly recommended. Monitor morning cortisol monthly.
Why is the 10 mg vial better for high-frequency use than the 5 mg?
At 3x daily dosing, a 5 mg vial lasts only 5–6 days — requiring frequent reconstitution. The 10 mg vial provides 11 days per reconstitution, reducing sterility risk and handling time by approximately 50%.
Should I rotate injection sites with GHRP-2?
Yes — rotate between abdomen, outer thigh, and upper arm for each injection. GHRP-2 at 3x daily creates 21 injection events per week; consistent site rotation prevents subcutaneous fibrosis and absorption irregularities.
Does GHRP-2 affect insulin sensitivity?
Acute GH elevation temporarily decreases insulin sensitivity for 2–4 hours post-injection via GH-induced lipolysis and FFA release. At therapeutic doses with proper cycling, this effect normalizes during off-cycles. Monitor fasting glucose monthly during active use.

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This 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.

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