I've seen freshwater pearl powder being presented as healthy primarily due to it being a natural source of various minerals. Although the sales talk sounded convincing, it's probably good to verify the claims. Pearl powder is part of traditional Chinese medicine and was mentioned in the _Hai Yao Ben Cao_. First of, freshwater pearl powder contains primarily calcium carbonate (CaCO₃) and magnesium carbonate, and some proteins, glycoproteins, and polysaccharides (Loh et al., 2021; Latire et a...
