Kirkland Signature Daily Probiotic

Kirkland Signature is the private label brand of Costco Wholesale Corporation, established in 1995. The brand was named after Kirkland, Washington, which was the location of Costco's headquarters at the time. Kirkland Signature products are designed to offer quality comparable to national brands at a lower price point.

Kirkland Signature supplements, like this Daily Probiotic, are manufactured through various third-party suppliers who meet strict quality standards. While the brand is American, the sourcing of ingredients and the final manufacturing of health supplements can take place in multiple countries, including the USA and Canada, depending on the specific formulation and supplier. Costco maintains ultimate ownership of the brand and oversees the supply chain to ensure global compliance and quality control.