Kirkland Signature Chewable Vitamin C 500 mg

Kirkland Signature is the private-label brand of Costco Wholesale Corporation. Its Vitamin C chewable tablets are a popular dietary supplement designed to support the immune system and provide antioxidant activity. The brand was launched in 1995, named after the city of Kirkland, Washington, where Costco's corporate headquarters were located at the time.

Most Kirkland Signature supplements, including this Vitamin C product, are manufactured in the United States by third-party contract manufacturers that adhere to strict quality standards. This specific product carries the USP (United States Pharmacopeia) Verified mark, indicating it has been tested for purity and potency. Costco Wholesale Corporation remains the ultimate owner and distributor, controlling the brand globally from its headquarters in Issaquah, Washington.