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The recommended dietary allowance is 15 μg/d (600 IU per day; 800 IU for those over 70 years). Overdose has been observed at 1,925 μg/d (77,000 IU per day). [citation needed] Acute overdose requires between 15,000 μg/d (600,000 IU per day) and 42,000 μg/d (1,680,000 IU per day) over a period of several days to months.
Taking too much vitamin D. ... People 9 and older, for example, may have a maximum 4,000 IU (100 mcg) of vitamin D per day. View this interactive chart on Fortune.com “Supplements, in the U.S ...
In that study, the compliance calculation could be questionable since only random samples of the returned medications were counted. In a study by De Niet et al., [72] 60 subjects with vitamin D deficiency were randomized to receive 2000 IU vitamin D3 daily or 50 000 IU monthly. They reported a similar efficacy of the two dosing frequencies ...
Taking too much vitamin D can be toxic in rare cases, as with an 89-year-old U.K. man who died in March in part from vitamin D toxicity (though he did have several underlying conditions).
$9.95 at Amazon. Vitamin Code Raw D3. This once-daily formula contains 5,000 IU of fat-soluble vitamin D3. “What I love about Garden of Life is that it also has probiotics mixed in, so you get a ...
The Swedish National Food Agency recommends a daily intake of 10 μg (400 IU) of vitamin D 3 for children and adults up to 75 years, and 20 μg (800 IU) for adults 75 and older. [176] Non-government organisations in Europe have made their own recommendations. The German Society for Nutrition recommends 20 μg. [177]