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"†The vitamin C in Ester-C has been clinically studied to stay in the white blood cells for up to 24 hours, which is longer than regular vitamin C. White blood cells are an important component of the immune system.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.