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Kirkland Signature

Controversies

Controversies tied to this brand in public sources. A listing is not a finding of fault.

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  1. 2026

    Lawsuit filed over Kirkland Signature drink mix sugar-free labeling

    Lawsuit filed

    Mason Maldonado sued Costco over the sugar-free labeling of Kirkland Signature Hydration Electrolyte Drink Mix, alleging that the product contains allulose and that the marketing misleads shoppers. The suit seeks damages and a court order requiring Costco to stop or correct the labeling. No court determination is reported.

    Source excerpt

    • Maldonado is seeking damages on behalf of anyone who purchased the product, and a court order requiring Costco to stop or correct the labeling, MyNorthwest reports.
    • As of October 15, 2026, Costco hasn’t filed a response, and a judge hasn’t determined whether the case can proceed as a class action. Costco hasn’t publicly responded to the lawsuit.
    • A lawsuit filed on September 30 claims Costco’s Kirkland Signature electrolyte drink mix isn’t truly sugar-free—despite the sugar-free claim on its packaging.
    Source

  2. 2019

    Costco Canada recalls Kirkland Signature infant formula

    Recall announced

    Costco Wholesale Canada Ltd. recalled Kirkland Signature Non-GMO Infant Formula for Babies Sensitive to Lactose due to possible Cronobacter contamination. Consumers were advised to discard the product or return it to the place of purchase. No illnesses had been reported in connection with the product.

    Costco Wholesale Canada Ltd. is recalling Kirkland Signature Non-GMO Infant Formula for Babies Sensitive to Lactose because of possible Cronobacter contamination. Consumers are advised to discard the product or return it to the place of purchase; no illnesses have been reported in connection with it.

    Source excerpt

    • Anyone who has the product is advised to either throw it out or return it to the place of purchase.
    Source