GHRP-6 Dosing & Protocols — Research Reference

GHRP-6 was the first GHRP characterized in detail and remains a reference compound for ghrelin-receptor research. Its protocols closely mirror GHRP-2 with one distinction: a pronounced central appetite-stimulating signal.

Reconstitution for Research

GHRP-6 is typically supplied lyophilized in 5 mg or 10 mg vials. A 2 mL bacteriostatic-water reconstitution of a 5 mg vial yields 2.5 mg/mL; 10 IU at that concentration delivers 250 mcg. Refrigerate at 2–8 °C and use within the COA's documented window.

Reference Dose Ranges in Published Research

| Research model tier | Typical range | Notes | |---|---|---| | Entry / characterization | 100 mcg per dose | Threshold for observable GH pulse | | Standard GH-pulse studies | 100–300 mcg per dose, 2–3× daily | Most cited; saturation near 1 mcg/kg | | Appetite / ghrelin-pathway research | 100 mcg per dose | Specifically chosen for the orexigenic signal |

Scheduling

Subcutaneous injection is the most-cited route. Pre-sleep, fasted-morning, and post-exercise timing windows are all represented in the literature. Cycle structure typically runs 8–12 weeks on with 4-week washout.

Appetite-Signal Considerations

GHRP-6's central NPY/AgRP activation is the defining feature in research selection: protocols studying ghrelin-pathway feeding behaviour favour GHRP-6; protocols studying pure GH release without orexigenic confounding favour ipamorelin or GHRP-2. The orexigenic signal is generally larger at the higher end of the dose range.

Co-Administration with GHRH Analogues

GHRP-6 + a GHRH analogue produces the same synergistic GH release seen with other GHRP/GHRH pairings. Typical pairing: 100–200 mcg GHRP-6 with 100–200 mcg CJC-1295 no-DAC or sermorelin per pulse.

Quality and Identity Verification

LC-MS confirmation of molecular weight (872.99 Da) and HPLC purity ≥98% are the standard acceptance criteria.

Research Use Only. All content is for laboratory research and educational reference. Compounds discussed are not intended for human or veterinary consumption.

References

1. Bowers CY, Momany F, Reynolds GA, et al. Structure-activity relationships of a synthetic pentapeptide that specifically releases growth hormone. Endocrinology. 1980;106(3):663–667.
2. Wren AM, Small CJ, Ward HL, et al. The novel hypothalamic peptide ghrelin stimulates food intake and growth hormone secretion. Endocrinology. 2000;141(11):4325–4328.
3. Sigalos JT, Pastuszak AW. The Safety and Efficacy of Growth Hormone Secretagogues. Sex Med Rev. 2018;6(1):45–53.