Costco faces lawsuit over allegedly contaminated protein powder
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Costco is facing a lawsuit alleging that a protein powder sold through its stores contained potentially dangerous levels of toxic heavy metals. The complaint claims that consumers were not adequately informed about the alleged presence of contaminants and argues that the product may have posed health risks to people who consumed it regularly. The case also raises broader questions about supplement testing, product labeling, and the responsibility of retailers to ensure the safety of products sold under their watch.
Source
Bandara SB, Towle KM, Monnot AD. A human health risk assessment of heavy metal ingestion among consumers of protein powder supplements. Toxicol Rep. 2020 Aug 21;7:1255-1262. doi: 10.1016/j.toxrep.2020.08.001. PMID: 33005567; PMCID: PMC7509468.
Additional Reading
https://www.theguardian.com/us-news/2026/jul/09/costco-lawsuit-protein-powder
https://www.delish.com/food-news/a71905353/costco-orgain-protein-powder-lawsuit-heavy-metals/