Costco Faces Lawsuit Over Heavy Metal Contamination in Protein Powder

Costco is facing a proposed class-action lawsuit over its Kirkland Signature Orgain Organic Plant-Based Protein Powder, which allegedly contained undisclosed levels of heavy metals such as lead and arsenic. The product was marketed as 'high quality' despite these concerns, raising questions about Costco's supply chain oversight.

By Maurie Backman Mon, July 13, 2026 at 9:20 PM GMT+3 3 min read · Yahoo Finance ·

Costco Faces Lawsuit Over Heavy Metal Contamination in Protein Powder

Tickers: $COST

Topics: consumer trust food safety lawsuits private-label products

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