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Does supplemental vitamin C intake have an effect on the flu among GrassrootsHealth participants? - GrassrootsHealth
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Redoxon Vitamin C with Zinc. Effervescent Dietary Supplement. Helps Your Immune System. Good Against Colds and flu. Orange flavored. 20 Tablets. 2.82 oz / 80 gr. Pack of 3 - Walmart.com
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Vitamin C the Common cold and the Flu by Pauling, Linus: Good Trade paperback (1976) Signed by Author(s) | Ground Zero Books, Ltd.
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