A 2019 stability study published in the Journal of Pharmaceutical Sciences found that gentle swirling (compared with vortexing) preserved greater than 98% peptide integrity in GHRH analogues stored at 4 C, while vortexing for 60 seconds reduced recovery to 91% [3]
Carrasco-Querol N, Cabricano-Canga L, Bueno Hernndez N, et al
This slow progression helps minimize gastrointestinal side effects
Adv Ther 36(10):2541-2546, 2019
Lysophosphatidylcholine induces oxidative stress in human endothelial cells via NOX5 activation - implications in atherosclerosis
Indicatively and honestly: GHK-Cu is a well-characterized cosmetic copper tripeptide with a genuinely plausible, multi-pathway rationale for supporting hair follicles dermal papilla vitality, angiogenesis, suppression of a catagen signal, and an anti-inflammatory, antioxidant tilt supported by in vitro and ex vivo data (much of it from the related peptide AHK-Cu) and by an extensive skin-regeneration literature