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An antivitamin is a substance that renders a vitamin metabolically ineffective. Vitamins are essential organic compounds, required in small amounts for normal bodily function, that are not energy sources themselves but facilitate metabolic processes. They are categorized as either fat-soluble (A, D, E, K) or water-soluble (C and B-complex vitamins). While essential, excessive intake of certain vitamins can lead to toxicity, with fat-soluble vitamins posing a greater risk of accumulation in the body. Antivitamins interfere with the body's ability to utilize these crucial nutrients.123

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