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The US Recommended Dietary Allowance for vitamin C for adult women is 76 mg/day and for adult men 90 mg/day. Although Linus Pauling was known for highly respectable research in chemistry and biochemistry, he was also known for promoting the consumption of vitamin C in large doses. [ 25 ]
Some vitamins such as vitamins ADEK are toxic in high doses, [70] including niacin (B 3), [71] cholecalciferol (D) [72] and tocopherol (E). [73] The view of the medical community is that there is no evidence for the efficacy of Orthomolecular medicine as a treatment for cancer, [ 6 ] and that high vitamin doses may – on the contrary ...
Multivitamins are typically available in a variety of formulas based on age and sex, or (as in prenatal vitamins) based on more specific nutritional needs; a multivitamin for men might include less iron, while a multivitamin for seniors might include extra vitamin D. Some formulas make a point of including extra antioxidants.
About 70–90% of vitamin C is absorbed by the body when taken orally at normal levels (30–180 mg daily). Only about 50% is absorbed from daily doses of 1 gram (1,000 mg). Even oral administration of megadoses of 3g every four hours cannot raise blood concentration above 220 micromol/L. [19]
Multivitamins divorced from foods became a commercial product in the 1940s, and Americans now spend $8 billion per year on the supplements. There are some cases where vitamin pills can be helpful ...
Geritol tablets. Geritol is a United States trademarked name for various dietary supplements, past and present. [1] Geritol is a brand name for several vitamin complexes plus iron or multimineral products in both liquid form and tablets containing from 9.5 to 18 mg of iron per daily dose. [2]
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