Not medical advice. Talk to your provider before using any peptide.
Full disclaimerPeptide Schedule Research TeamReviewed Apr 20267 Citations
GHRP-26 residues (approx.)AAWFKEach bubble = one amino acid. Size = residue mass. Color = chemical class.Uses closest standard amino acids for non-standard residues.GHRP-2 produces the strongest GH pulse of the commonly used secretagogues, but receptor desensitization kicks in within five days. Approved in Japan only as a diagnostic tool. The community figured out 5-on/2-off cycling before the clinical data confirmed why it works. Best paired with CJC-1295 (no DAC) on an empty stomach.
100mcg · Daily
Summary: Add 2mL BAC water to your 5mg vial. Draw to 4.0 units on a U-100 syringe for a 100mcg dose. This vial will last 50 doses.
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| Level | Dose / Injection | Frequency |
|---|---|---|
| Beginner | 100mcg | Daily |
| Moderate | 200mcg | 2x Daily |
| Aggressive | 200mcg | 3x Daily |
Reconstitution math for the standard 5 mg vial: add 2 mL bacteriostatic water. That gives you 2,500 mcg/mL. On a U-100 insulin syringe, 100 mcg equals 4 units. A 200 mcg dose is 8 units. One vial at 200 mcg twice daily lasts about 12.5 days. The fasting window is non-negotiable. Food raises somatostatin, which directly blunts the GH pulse. No food for 30 minutes before or after injection. Most beginners who report "GHRP-2 doesn't work" are eating too close to their injection. Stack it. Running GHRP-2 alone leaves GH output on the table. Co-inject with CJC-1295 (no DAC) at 100 mcg for the complementary pulse. Same syringe, same injection, same time. Store reconstituted vials refrigerated at 2 to 8 degrees Celsius and use within four weeks. Don't freeze reconstituted solution. Lyophilized powder is stable refrigerated for up to 12 months. The 5-on/2-off schedule is the one thing experienced users universally agree on. Start it from week one, not after you notice declining response.
Dosing based on Community dosing consensus from peptide research communities — 10 published references.View all sources →
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Pricing updated 2026-04-09
Prices are estimates and vary by source, location, and prescription status.Full pricing breakdown →
Disclaimer: This curve is a simplified first-order exponential decay model. Actual pharmacokinetics vary based on injection site, individual metabolism, body composition, and other factors. Half-life values are approximate and based on available preclinical and clinical literature. Many research peptides lack formal human pharmacokinetic studies. This is for educational purposes only — not medical advice.
GHRP-2 produces the strongest GH pulse of the commonly used secretagogues, but receptor desensitization kicks in within five days. Approved in Japan only as a diagnostic tool. The community figured out 5-on/2-off cycling before the clinical data confirmed why it works. Best paired with CJC-1295 (no DAC) on an empty stomach.
