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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.
The Daily Value for potassium, 4,700 mg per day, was based on a study of men who were given 14.6 g of sodium chloride per day and treated with potassium supplements until the frequency of salt sensitivity was reduced to 20%. [18] [19]
The RDA is based on the α-tocopherol form because it is the most active form as originally tested. Vitamin E supplements are absorbed best when taken with meals. [17] The U.S. Institute of Medicine has set an upper tolerable intake level (UL) for vitamin E at 1,000 mg (1,500 IU) per day. [18]
An inverse relationship between dietary vitamin E and lung cancer was reported in observational studies, [72] but a large clinical trial in male tobacco smokers reported no impact on lung cancer between treatment and placebo, [73] and a trial which tracked people who chose to consume a vitamin E dietary supplement reported an increased risk of ...
The US Food and Nutrition Board set a tolerable upper intake level (UL) at 1,000 mg (1,500 IU) per day derived from animal models that demonstrated bleeding at high doses. [30] In the US, the popularity for vitamin E as a dietary supplement peaked around 2000, with popular doses of 400, 800 and 1000 IU/day.
Important note: Before making significant changes to your diet or supplement intake, it's essential to consult with a health care professional, especially if you have underlying health conditions ...
Participants were divided into two groups—one was given a placebo, while the other was given a vitamin D supplement of 60,000 IU a month (which averages out to about 2,000 IU a day) for up to ...
In the United States, a multivitamin/mineral supplement is defined as a supplement containing three or more vitamins and minerals that does not include herbs, hormones, or drugs, where each vitamin and mineral is included at a dose below the tolerable upper intake level as determined by the Food and Drug Board, and does not present a risk of ...
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