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Because GHK-Cu is still being studied, its long-term effects are not fully known yet, so patch testing is always recommended before regular use
Mix with water or your favorite beverage
There is a lack of long-term effects data, including concerns about abnormal cell growth and the need for ongoing evaluation and monitoring
Already, at least 1 in 8 American adults [archived link] have taken a GLP-1 and more than half would qualify to take one, according to the latest estimates [archived link]
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