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Some peptides particularly those in the growth hormone secretagogue class have been studied via IM administration, but for home protocols, SubQ is the standard and preferred route due to its safety margin and more predictable absorption profile

2019;PMC7190605

It reduced heart tissue damage in rats with experimentally induced heart attacks (by improving blood flow and reducing oxidative damage)

The two compounds cycle independently based on GHK-Cus recommended on-off structure while Retatrutide follows its own longer protocol timeline

Clinical evaluation included daily assessment of lameness, defined as the inability of the rabbit to bear weight and maintain the typical flexion-extension cycle of the affected limb compared to the unaffected limb