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The abdomen, thighs, and upper arms are recommended sites
Its name gives away its primary function: promoting delta-wave sleep, the deepest and most restorative stage of the sleep cycle
Share a complete list of your prescriptions, over-the-counter products, vitamins, and supplements during your consultation so your provider can check for potential interactions
Notably, endogenous GHK-Cu levels in human plasma are age-dependent, dropping from ~200 ng/mL at age 20 to below 80 ng/mL after age 60
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