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Vukojevic et al., 2018
The unknown substance is mixed with a small amount of a pure, known sample
Most of the credible GHK-Cu evidence is either in vitro (cell culture) or topical (creams and serums applied to skin)
10.1016/j.ejphar.2014.01.046 31 DuzelA.VlainicJ.AntunovicM.MalekinusicD.VrdoljakB.SamaraM.et al (2017)
To see my deep-dive analysis from when this trend first escalated, you can watch my original video below: A Gastroenterologists Approach: Evidence Based Assessment If you have persistent gut symptoms, recurrent flares, bloating, food intolerance or concerns about inflammatory bowel disease, it is important not to rely on unproven supplements or online peptide claims alone
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