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However, differences in absorption, safety, and effectiveness are not well established in large human trials

All current evidence is from animal or in vitro models

[DOI] [PubMed] [Google Scholar] 36.Ilic S, Drmic D, Zarkovic K, Kolenc D, Brcic L, Radic B, et al

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Although changes at the tissue level can take 6 to 12 weeks or more, some people claim to feel better after just 2 to 4 weeks
