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Description
Effects last several hours

[DOI] [PubMed] [Google Scholar] 102.Hummel J., Benkendorff C., Fritsche L., Prystupa K., Vosseler A., Gancheva S., Trenkamp S., Birkenfeld A.L., Preissl H., Roden M., et al

Each hour outside the refrigerator reduces potency

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In the foundational animal study, even doses 200x above the effective GH-releasing dose did not elevate cortisol, demonstrating true selectivity rather than mere dose separation
