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Ingredient sourcing and quality influence cost
One caution on the numbers below: percentages from small supplement trials cannot be compared directly with prescription-drug studies, the trial designs and sizes are worlds apart
PubMed Hsieh, M
The quality of evidence for medical interventions does not improve or worsen: a metaepidemiological study of Cochrane reviews
Angiogenesis concern: Because GHK-Cu promotes blood vessel formation, there is a theoretical concern that it could support tumor vascularization in individuals with active cancer
Rapid weight loss carries a small increased risk of gallstones
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