The difference is bioavailability
References Domest Anim Endocrinol Effects of GHRP-2 on GH release Mechanism and receptor activation in swine J Clin Endocrinol Metab GHRP-2 in GH-deficient children Eight months treatment with graded doses Eur J Endocrinol Fiveday GHRP-2: attenuation and IGFI Response attenuation in healthy young men Endocrine GH/IGF1 response to GHRP-2 in older adults Acute and chronic effects Am J Men's Health GH secretagogue raises IGF1 ~50% increase over 3 months in hypogonadal men Sex Med Rev (PMC) Safety and efficacy of GH secretagogues Comprehensive review Asian-Australas J Anim Sci Twicedaily GHRP-2 effects IGF1 and tachyphylaxis patterns Sigma-Aldrich Peptide storage guidelines Lyophilized storage at 20 C
Together, these biophysical studies indicate that Syn WT monomers engage in selective and specific interactions, exhibiting higher affinity for functionally relevant partner proteins
15 ROS include radical compounds, such as superoxide, hydroxyl radicals, and lipid hydroperoxides, and reactive nonradical compounds, such as singlet oxygen, hydrogen peroxide (H 2 O 2 ), hypochlorous acid, chloramines, and ozone