Vitamin D - Mayo Clinic
2023年8月10日 · Taking a multivitamin with vitamin D may help improve bone health. 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.
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...
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 adults’ vitamin D needs are much higher.
Normal vitamin D levels by age, sources, and toxicity
2023年12月21日 · For adults, a level of vitamin D in the blood of 20 nanograms per milliliter (ng/mL) or above is generally considered adequate. Levels below 20 ng/mL are generally too low for adequate bone...
Vitamin D: How Much to Take Per Day and Max Dose - GoodRx
2024年4月5日 · According to most medical experts, the recommended dietary allowance (RDA) of vitamin D for adults up to age 70 is 600 IU. But the FDA recommends 20 mcg per day, or 800 IU (1 mcg vitamin D is equal to 40 IU). The best way to …
How much vitamin D do I need? The amount of vitamin D you need each day depends on your age. Average daily recommended amounts are listed below in micrograms (mcg) and International Units (IU): Recommended. What foods provide vitamin D?
How Much Vitamin D Should You Take For Optimal Health?
2023年6月23日 · How much do you need? Optimal blood levels. Deficiency. Sources. Can we get enough from the sun? Supplements video. Too much. FAQ. Summary. Vitamin D is essential for bone health and immune...
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