what amount of vitamin d should you take?
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If you choose to take vitamin D supplements, 10 micrograms a day will be enough for most people. Do not take more than 100 micrograms of vitamin D a day as it could be harmful. This applies to adults, including pregnant and breastfeeding women and the elderly, and children aged 11 to 17 years.
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The Vitamin D Council places the ideal level between 40 and 80 ng/mL with levels below 20 ng/mL as deficient. The Endocrine Society has a Clinical Practice Guideline on the evaluation, treatment, and prevention of vitamin D deficiency.
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Oral vitamin D3 can be taken once a day but also with longer intervals because of its long half life, being around 25 days. It is not known whether equivalent doses once a week or once a month are equally effective.
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Vitamin D is essential for healthy bones. In the UK we get most of our vitamin D from sunlight exposure from around late March/early April to the end of September. Find out how to get enough without risking sun damage. We need vitamin D to help the body absorb calcium and phosphate from our diet.
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What kind of vitamin D is best? The recommended form of vitamin D is vitamin D3 or cholecalciferol. This is the natural form of vitamin D that your body makes from sunlight. Supplements are made from the fat of lambs' wool.
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The Bottom Line Regular sun exposure is the most natural way to get enough vitamin D. To maintain healthy blood levels, aim to get 10–30 minutes of midday sunlight, several times per week. People with darker skin may need a little more than this.
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['Should you take vitamin supplements?', 'Vitamin D.', 'Iron.', 'Calcium.', 'B vitamins.', 'Vitamin C.']
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Although 4,000 IU (250 mcg) is set as the maximum amount of vitamin D you can take safely, several studies have shown that taking up to 10,000 IU (250 mcg) daily won't cause side effects ( 37 , 38 ). That said, taking more than 4,000 IU may provide no extra benefit.
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Given that your body doesn't care whether it's taking more vitamin D2 or less vitamin D3—as long as it's within the recommended dose—either type could be perfectly fine if you're taking it for general health.
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Vitamin D aids in the absorption of calcium and phosphorus, two essential minerals for maintaining bone health and strength. Just one half-cup serving of mushrooms provides 100 percent of the recommended daily vitamin D intake.
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According to most standards, sufficient values for vitamin D are between 30 and 60 ng/mL. For those with chronic conditions like diabetes, autoimmune disease, or cancer, it's not unusual for a provider to target a vitamin D level higher than the typical sufficient range.
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Better Absorbed With Meals For this reason, it's recommended to take vitamin D supplements with a meal to enhance absorption. According to one study in 17 people, taking vitamin D with the largest meal of the day increased vitamin D blood levels by about 50% after just 2–3 months ( 7 ).
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The recommended daily amount of vitamin D is 400 international units (IU) for children up to age 12 months, 600 IU for ages 1 to 70 years, and 800 IU for people over 70 years.
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According to experts, 5-30 minutes of daily sun exposure is needed to get a sufficient amount of Vitamin D. This should be anytime from 10 am to 3 pm.
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If you're taking a vitamin D supplement, you probably don't need more than 600 to 800 IU per day, which is adequate for most people. Some people may need a higher dose, however, including those with a bone health disorder and those with a condition that interferes with the absorption of vitamin D or calcium, says Dr.
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The normal range of vitamin D is measured as nanograms per milliliter (ng/mL). Many experts recommend a level between 20 and 40 ng/mL. Others recommend a level between 30 and 50 ng/mL. The examples above are common measurements for results of these tests.
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Taken in appropriate doses, vitamin D is generally considered safe. However, taking too much vitamin D can be harmful. Children age 9 years and older, adults, and pregnant and breast-feeding women who take more than 4,000 IU a day of vitamin D might experience: Nausea.