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Subcutaneous injection provides near 100% bioavailability and systemic distribution, whereas topical application is limited by skin barrier penetration
Prevalence of B12 deficiency is highest in elderly people: in nursing homes the percentage is 25% to 35%
In laboratory studies, DSIP administration has been shown to reduce the perception of acute and chronic pain
Wu, "Effects of GHK-Cu on MMP and TIMP expression, collagen and elastin production, and facial wrinkle parameters," J
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