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AMIRAVOResearch Library
Cycle-length evidence

GHRP-6 cycle length: what human studies ran

Not approved — research use onlyBLimited human data
Short answer: there is no established GHRP-6 cycle length, and we found no human studies that report one.

Treatment and follow-up in human studies

No human study durations are recorded.

What has not been tested

  • On-and-off schedules or breaks between courses.
  • Repeated courses and long-term exposure beyond the periods listed.
  • GHRP-6 combined with other compounds, unless a study above says so.

Frequently asked questions

Is there an established GHRP-6 cycle length?
No. We found no human studies that report a treatment duration for GHRP-6.
What is the longest human study of GHRP-6?
None is recorded.
Do study durations tell me how long to use something?
No. A study duration is how long investigators administered a compound to selected participants under monitoring. It is not a recommended course, and a break between courses has not been tested for any compound on this site that is not approved.
GHRP-6 dosing reference Full research page

References

  1. Growth hormone releasing hexapeptide-6 (GHRP-6) test in the diagnosis of GH-deficiency J Pediatr Endocrinol Metab. 1996
  2. GHRP-6 induces CREB phosphorylation and growth hormone secretion via a protein kinase Csigma-dependent pathway in GH3 cells J Huazhong Univ Sci Technolog Med Sci. 2010
  3. Diagnosis of growth hormone deficiency in adults: provocative testing with GHRP6 in comparison to the insulin tolerance test Horm Metab Res. 2009
  4. A single growth hormone (GH) determination is sufficient for the diagnosis of GH-deficiency in adult patients using the growth hormone releasing hormone plus growth hormone releasing peptide-6 test Clin Endocrinol (Oxf). 2002
  5. Intranasal administration of His-D-Trp-Ala-Trp-D-Phe-LysNH2 (growth hormone releasing peptide) increased plasma growth hormone and insulin-like growth factor-I levels in normal men Endocrinol Jpn. 1991
  6. A receptor in pituitary and hypothalamus that functions in growth hormone release Science. 1996
  7. Ghrelin is a growth-hormone-releasing acylated peptide from stomach Nature. 1999
  8. Hypothalamic growth hormone secretagogue-receptor (GHS-R) expression is regulated by growth hormone in the rat Endocrinology. 1997
  9. Growth hormone secretagogues: mechanism of action and use in aging Growth Horm IGF Res. 1998
  10. Bulk Drug Substances Nominated for Use in Compounding Under Section 503A of the FD&C Act (categories 1, 2 and 3; updated May 14, 2026) FDA. 2026
  11. International Standard: Prohibited List 2026 (S0 Non-approved substances; S2 Peptide hormones, growth factors, related substances and mimetics) World Anti-Doping Agency. 2026