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Peer-reviewed clinical trial data published in the New England Journal of Medicine establishing semaglutides efficacy for chronic weight management, with average weight loss of 14.9 percent of body weight at 68 weeks positions these as a fundamentally different category of intervention than peptides like GHK-Cu

When evaluating Canadian suppliers, look for Certificate of Analysis (COA) documentation showing purity of 95% or higher, along with heavy metal and endotoxin testing results

The concern isn't copper per se but rather the uncertainty about how supplemental copper peptides might affect a developing fetus or nursing infant

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