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While it is available for purchase online, its use in humans is not FDA-approved in the United States and it is not legal for over-the-counter or prescription use unless part of a clinical trial
The methodology that is routinely applied does not identify it
It is important to emphasize that oral over-the-counter supplements, including vitamin C, are not regulated by the FDA, which may raise concerns about quality and potency
doi: 10.1146/annurev.iy.12.040194.003113 80 ColvinRAMeansTKDiefenbachTJMoitaLFFridayRPSeverSet al
[DOI] [PubMed] [Google Scholar] 49.Muthumalage T, Lucas JH, Wang Q, Lamb T, McGraw MD, and Rahman I
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