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Further clinical trials are necessary to fully understand its safety, efficacy, and optimal dosing in humans
Side effects of Topical GHK-Cu have not been widely reported and it is considered generally safe, particularly at typical cosmetic usage concentrations
some studies suggest that high-glycemic foods and dairy products may exacerbate acne for certain individuals
Some individuals notice vivid dreams, lighter sleep, or difficulty adjusting as their circadian system responds to the peptide's effects on melatonin regulation
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This part is because they may be unable to eliminate the vitamin B 12 from the body
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