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Recommendations for vitamin C intake by adults have been set by various national agencies: 40 mg/day: India National Institute of Nutrition, Hyderabad [15] 45 mg/day or 300 mg/week: the World Health Organization [16] 80 mg/day: the European Commission Council on nutrition labeling [17] 90 mg/day (males) and 75 mg/day (females): Health Canada ...
Vitamin C megadosage is a term describing the consumption or injection of vitamin C (ascorbic acid) in doses well beyond the current United States Recommended Dietary Allowance of 90 milligrams per day, and often well beyond the tolerable upper intake level of 2,000 milligrams per day. [1]
Tolerable upper intake levels (UL), to caution against excessive intake of nutrients (like vitamin A and selenium) that can be harmful in large amounts. This is the highest level of sustained daily nutrient consumption that is considered to be safe for, and cause no side effects in, 97.5% of healthy individuals in each life stage and sex group.
A meta-analysis concluded that supplementary vitamin C significantly lowered serum uric acid, considered a risk factor for gout. [26] One population study reported an inverse correlation between dietary vitamin C and risk of gout. [27]
Vitamin C and the Common Cold is a popular book by Linus Pauling, first published in 1970, on vitamin C, its interactions with common cold and the role of vitamin C megadosage in human health. [1] The book promoted the idea that taking large amounts of vitamin C could reduce the duration and severity of the common cold. A Nobel Prize-winning ...
Vitamin B 12 ; Vitamin C (ascorbic acid and ascorbates) Vitamin D (calciferols) Vitamin E (tocopherols and tocotrienols) Vitamin K (phylloquinones, menaquinones, and menadiones) Some sources include a fourteenth, choline. [6] Vitamins have diverse biochemical functions. Vitamin A acts as a regulator of cell and tissue growth and differentiation.
Vitamin C, an antioxidant, is required to make the building blocks for collagen, carnitine, and catecholamines, and assists the intestines in the absorption of iron from foods. [2] [4] [5] Diagnosis is typically based on outward appearance, X-rays, and improvement after treatment. [2] Treatment is with vitamin C supplements taken by mouth. [1]
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