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Ester-C® Plus 1000 mg Vitamin C Tablets | Immune Support | Solgar
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Vitamin C Complex Supplement | MegaFood
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Why vitamin C won't 'boost' your immune system against the coronavirus | Live Science
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Best Vitamin C Supplement of 2023 (Review) | Miami Herald
Health Benefits of Vitamin C Supplements
High-Dose Vitamin C Pills Could Double Kidney-Stone Risk - Tufts Health & Nutrition Letter
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Vitamin C - Missouri Poison Center
