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Supporting your topical copper peptide routine with adequate protein intake (aim for 1.2-1.6g per kilogram of body weight) or a quality collagen supplement gives your fibroblasts something to work with

Biochemical markers of bone turnover part I: biochemistry and variability. Clin Biochem Rev , 2005

Intravenous delivery results in immediate full-concentration exposure and typically the shortest apparent half-life because peak plasma levels degrade the fastest

So the better option depends on the goal: For rapid muscle gain and strength: steroids are more effective, but they carry higher risks

Each peptide is different