Hexarelin Dosing: 100-200mcg Cycling

Hexarelin is the most potent GHRP studied in humans — but its strength comes with a catch: receptor desensitization. For a full breakdown of hexarelin's benefits and how it compares to other GHRPs, see our hexarelin deep dive. This is not medical advice.

Quick Reference: Community Protocol

Hexarelin is not in the standard cheat sheet — this is a community protocol based on research literature and anecdotal reports.

Cycling Details

Among all GHRPs, hexarelin shows the most pronounced GHSR-1a receptor downregulation with chronic use. The GH response progressively weakens even while the dose stays the same.

Option 1 — Fixed On/Off: 4 weeks on, 4 weeks off, repeat. Simple and effective.

Option 2 — GHRP Rotation: 4 weeks hexarelin, then 4-8 weeks ipamorelin or GHRP-2, then return. Maintains GH secretagogue use year-round while allowing GHSR-1a recovery.

Option 3 — Weekend Breaks: 5 days on / 2 days off each week. May slow desensitization but won't prevent it over multi-month use.

Desensitization is temporary. After a 4+ week washout, GHSR-1a sensitivity returns to baseline.

Enhanced Protocol (Community)

For experienced users seeking maximum single-pulse GH amplitude:

• Dose: 200 mcg per injection
• Frequency: 2x daily (AM + PM)
• Cycle: 4 weeks on / 4 weeks off (strict)

Higher doses accelerate desensitization and increase prolactin/cortisol spillover. Most experienced users cap at 200 mcg per injection and keep cycles shorter.

Routes of Administration

Subcutaneous (standard): Lower abdomen or love handles. Volume is small (0.04-0.08 mL). Use 29-31 gauge insulin syringe. Always on an empty stomach — at least 2 hours after eating, 30 minutes before food.

Best injection windows: Morning upon waking (fasted), post-workout (30+ min after eating), before bed (2+ hours after dinner).

Reconstitution Quick Reference

Math: 5,000 mcg / 2 mL = 2,500 mcg/mL. 100 mcg / 2,500 = 0.04 mL = 4 units. Swirl gently, refrigerate, use within 28 days.

For step-by-step reconstitution instructions, see the BPC-157 reconstitution guide — same technique applies to all lyophilized peptides.

Where These Numbers Come From

Clinical hexarelin studies help contextualize community doses — though most were single-dose pharmacokinetic designs, not long-term protocols.

Bowers et al. (1991) used doses of 1 mcg/kg IV in early GHRP characterization studies, establishing hexarelin's potent GH-releasing activity (PMID 2004615). Ghigo et al. (1994) tested subcutaneous, intranasal, and oral routes at 20 mcg/kg — far above typical community doses — confirming SubQ as the most reliable route (PMID 8126144).

Arvat et al. (2001) compared hexarelin to ghrelin at 1 mcg/kg IV, confirming hexarelin's superior GH pulse amplitude (PMID 11238504). Locatelli et al. (1999) confirmed GH-independent cardiac effects via CD36 receptors (PMID 10465272).

Community doses of 100-200 mcg per injection are significantly lower than most clinical study doses, which were designed for acute pharmacological characterization rather than sustained use.

Stacking Protocols

Hexarelin and CJC-1295 can be drawn into the same syringe. Follow hexarelin's 4-8 week cycle limit when stacking.

Side Effects & Safety

• Hunger increase — present but milder than GHRP-6
• Cortisol elevation — dose-dependent at 150-200+ mcg, unlike ipamorelin
• Prolactin increase — can cause water retention or mood changes at sustained high doses
• Water retention/puffiness — particularly face and hands
• Carpal tunnel symptoms — indicates significant GH elevation; reduce dose if persistent
• Desensitization — diminishing effects despite consistent dosing means time to cycle off, not increase dose
• Flushing/tingling — mild, typically fades within minutes

Frequently Asked Questions

How do I reconstitute a 5mg hexarelin vial?

Add 2 mL of bacteriostatic water for 2,500 mcg/mL. 100 mcg = 4 units on a U-100 insulin syringe. Refrigerate, use within 28 days.

How long can I run hexarelin before desensitization?

4-8 weeks maximum. GH response diminishes progressively with daily use beyond this window. Cycle off for at least 4 weeks or rotate to another GHRP like ipamorelin.

When should I inject hexarelin for best results?

Always on an empty stomach — at least 2 hours after eating and 30 minutes before food. Best windows: morning upon waking, post-workout, and before bed.

Can I stack hexarelin with CJC-1295?

Yes — the GHRP initiates the GH pulse while the GHRH amplifies it. They can be mixed in the same syringe. Follow hexarelin's cycle limit.

What's the difference between hexarelin and ipamorelin?

Hexarelin produces stronger GH pulses but desensitizes faster and raises cortisol/prolactin at higher doses. Ipamorelin is milder but can run longer. Many protocols rotate between them.

Related Guides

• Hexarelin peptide page — vendor pricing and full profile
• Hexarelin deep dive — benefits and research breakdown
• Ipamorelin Dosing Guide — cleanest GHRP for rotation
• GHRP-2 Dosing Guide — middle-ground GHRP option
• CJC-1295 + Ipamorelin Guide — GHRH+GHRP stacking
• GHRH vs GHRP — understanding the two GH secretagogue classes
• Calculate Your Hexarelin Cycle Cost — estimate vials needed and total cost
• Peptides and TRT: 8 Synergies That Amplify Results — how GHRPs pair with TRT
• Best Peptides for Muscle Growth (2026) — all 10 muscle-building peptides ranked

References

This article is for educational and research purposes only. It is not medical advice. Hexarelin is a research compound — consult a qualified healthcare provider before use.