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  1. Mayo Clinic
    https://www.mayoclinic.org/drugs-supplements-vitamin-d/art-20363792

    Vitamin D - Mayo Clinic

    • Vitamin D is a nutrient your body needs for building and maintaining healthy bones. That's because your body can only absorb calcium, the primary component of bone, when vitamin D is present. Vitami… 展开

    What The Research Says

    Research on vitamin D use for specific conditions shows: 1. Cancer.Findings on the … 展开

    Mayo Clinic
    Our Take

    Generally safe
    Without vitamin D your bones can become soft, thin and brittle. Insufficient vitamin D is also connected to osteoporosis. If you don't get enough vita… 展开

    Mayo Clinic
    Safety and Side Effects

    Taken in appropriate doses, vitamin D is generally considered safe. However, taking too much vitamin D in the form of supplements can be harmful. Children age 9 years and olde… 展开

    Mayo Clinic
    Interactions

    Possible interactions include: 1. Aluminum.Taking vitamin D and aluminum-containing phosphate binders, which may be used to treat high serum phosphate levels in people … 展开

    Mayo Clinic
    What Vitamin D Dosage Is Best? - Healthline
    In the United States, current guidelines suggest that consuming 400–800 International Units (IU), or 10–20 micrograms (mcg), of vitamin D should meet the needs of 97%–98% of all hea…
    Healthline · https://www.healthline.com/nutritio…
    反馈
    目录
    What The Research Says
    Our Take
    Safety and Side Effects
    Interactions
     
  1. The recommended daily intake of vitamin D3 is 400–800 IU (10–20 micrograms)1234:
    • Children up to age 12 months: 400 IU (10 mcg)
    • People ages 1 to 70 years: 600 IU (15 mcg)
    • People over 70 years: 800 IU (20 mcg)
    了解详细信息：
    Vitamin D recommended intake is 400–800 IU/day or 10–20 micrograms, depending on your age.

    How Much Vitamin D Should You Take fo…

    www.healthline.com/nutrition/how-much-vitamin-d-t…
    The recommended daily amount of vitamin D is 400 international units (IU) for children up to age 12 months, 600 IU for people ages 1 to 70 years, and 800 IU for people over 70 years.

    Vitamin D - Mayo Clinic

    www.mayoclinic.org/drugs-supplements-vitamin-d/…
    In the United States, current guidelines suggest that consuming 400–800 International Units (IU), or 10–20 micrograms (mcg), of vitamin D should meet the needs of 97%–98% of all healthy people (14).

    What Vitamin D Dosage Is Best? - Healthl…

    www.healthline.com/nutrition/vitamin-d-dosage

    A daily vitamin D intake of 600 international units (IU), or 15 micrograms (mcg), should be enough to ensure optimal blood levels for most people. People over age 70 should consume 800 IU (20 mcg) daily. The...

    How Much Vitamin D Is Too Much? The S…

    www.healthline.com/nutrition/how-much-vitamin-d-i…
  2. 其他用户还问了以下问题
    How much vitamin D should I take a day?
    The recommended daily amount of vitamin D is 400 international units (IU) for children up to age 12 months, 600 IU for people ages 1 to 70 years, and 800 IU for people over 70 years. Research on vitamin D use for specific conditions shows: Cancer. Findings on the benefits of vitamin D for cancer prevention are mixed.

    Vitamin D - Mayo Clinic

    mayoclinic.org
    How much vitamin D3 should I take a day?
    Vitamin D3 is available in the following dosage amounts: If your blood levels are really low, you may need high doses under the direction of a healthcare professional. In people with vitamin D levels less than 20 ng/mL, they often start with 50,000 IU of vitamin D3, once a week for 6 to 8 weeks.

    Vitamin D: How Much to Take Per Day and Max Dose - GoodRx

    goodrx.com
    How many IU in a MCG of vitamin D?
    RDAs for vitamin D are listed in both micrograms (mcg) and International Units (IU); 1 mcg vitamin D is equal to 40 IU (Table 2). Even though sunlight is a major source of vitamin D for some people, the FNB based the vitamin D RDAs on the assumption that people receive minimal sun exposure .

    Vitamin D - Health Professional Fact Sheet - Office of Dietary

    ods.od.nih.gov
    How much vitamin D should a cancer patient take?
    In the most recent meta-analysis, 10 randomized clinical trials (including the VITAL trial described below) that included 6,537 cancer cases provided 10 to 50 mcg (400 to 2,000 IU) vitamin D 3 daily (six trials) or 500 mcg (20,000 IU)/week to 12,500 mcg (500,000 IU)/year boluses of vitamin D 3 (four trials) .

    Vitamin D - Health Professional Fact Sheet - Office of Dietary

    ods.od.nih.gov
    What is a Daily Value (DV) for vitamin D?
    * DV = Daily Value. The FDA developed DVs to help consumers compare the nutrient contents of foods and dietary supplements within the context of a total diet. The DV for vitamin D is 20 mcg (800 IU) for adults and children age 4 years and older .

    Vitamin D - Health Professional Fact Sheet - Office of Dietary

    ods.od.nih.gov
    How much vitamin D does Drisdol contain?
    Prescription vitamin D (Drisdol) contains 50,000 IU (international units) of vitamin D2. OTC supplements can contain either vitamin D2 or vitamin D3. But they typically only contain between 400 IU to 10,000 IU per dose. The dosage forms available. Prescription vitamin D only comes as a capsule. OTC vitamin D comes in a wider range of dosage forms.

    Vitamin D Dosage Guide For Adults, Children - GoodRx

    goodrx.com
    反馈
  3. Healthline
    https://www.healthline.com/nutrition/vit…

    What Vitamin D Dosage Is Best? - Healthline

    2023年3月14日 · In the United States, current guidelines suggest that consuming 400–800 International Units (IU), or 10–20 micrograms (mcg), of vitamin D should meet the needs of 97%–98% of all healthy...

  4. Healthline
    https://www.healthline.com/nutrition/ho…

    How Much Vitamin D Should You Take For Optimal …

    2023年6月23日 · Vitamin D recommended intake is 400–800 IU/day or 10–20 micrograms, depending on your age.

  5. GoodRx
    https://www.goodrx.com/.../how-much-…

    Vitamin D: How Much to Take Per Day and Max Dose

    2024年4月5日 · Studies suggest that vitamin D3 increases vitamin D levels faster than vitamin D2 does, especially at higher doses. But both types of vitamin D will still increase your levels. How much vitamin D3 should I take per day? Vitamin …

  6. Mayo Clinic News Network
    https://newsnetwork.mayoclinic.org/dis…

    Mayo Clinic Q and A: How much vitamin D do I need?

    2017年4月25日 · The Institute of Medicine has placed the recommended dietary allowance, or RDA, for vitamin D at 600 international units (IU) per day for young adults and 800 IU per day for adults older than 70. Other experts suggest that …

  8. Office of Dietary Supplements (ODS)
    https://ods.od.nih.gov/pdf/factsheets/VitaminD-Consumer.pdf
    [PDF]

    Vitamin D Fact Sheet for Consumers - Office of Dietary …

  9. Office of Dietary Supplements (ODS)
    https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional

    Vitamin D - Health Professional Fact Sheet - Office of Dietary ...

  10. GoodRx
    https://www.goodrx.com/conditions/vit…

    Vitamin D Dosage Guide For Adults, Children - GoodRx

    2023年10月2日 · The recommended OTC vitamin D dosage for most adults with low vitamin D levels is 2,000 IU daily. Higher doses may be needed if your vitamin D levels are very low. But dosages over 4,000 IU daily aren’t …

  11. harvard.edu
    https://nutritionsource.hsph.harvard.edu/vitamin-d

    Vitamin D - The Nutrition Source

  12. Harvard Health
    https://www.health.harvard.edu/stayin…

    How much vitamin D do you need? - Harvard Health

    2019年1月31日 · Based on the evidence for bone benefits, however, the IOM panel increased the RDA for vitamin D to 600 IU for people up to age 70 and to 800 IU for those over 70. That's a fairly sizable boost over the previous …

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