Rice Krispies Crackle and Pop touting the brand. In 1963, The Rolling Stones recorded a short song for a Rice Krispies television advertisement. Rice Krispies contain rice, sugar, salt, malt flavoring, iron, ascorbic acid (vitamin C), alpha tocopherol acetate (vitamin E), niacinamide, vitamin A palmitate, pyridoxine hydrochloride (vitamin B6), riboflavin (vitamin B2), thiamin hydrochloride (vitamin B1), folic acid, vitamin B12, and vitamin D. According to Kellogg's, the rice used in the US version of the cereal is grown in the states of Louisiana and Arkansas. Kellogg Company was found by the Federal Trade Commission to be making unsubstantiated and misleading health claims
L-gulonolactone oxidase deficiency living in a malarial infested environment". He based his observation on evidence which indicates that G6PD deficient individuals display enhanced sensitivity to ascorbic acid induced hemolysis. Studies of human diseases have benefited from the availability of small laboratory animal models. However, the tissues of animal models with a GULO gene generally have high levels of ascorbic acid and so are often only slightly influenced by exogenous vitamin C. Guinea pigs, for instance, are a popular human model but lost the ability to synthesize L-gulono-gamma-lactone oxidase 20 million years ago. This is a major handicap for studies involving the endogenous