Vitamin D - Health Professional Fact Sheet - Office of Dietary ...
Vitamin D (also referred to as calciferol) is a fat-soluble vitamin that is naturally present in a few foods, added to others, and available as a dietary supplement. It is also produced endogenously when ultraviolet (UV) rays from sunlight strike the skin and trigger vitamin D synthesis.
Vitamin D Dosing: Basic Principles and a Brief Algorithm (2021 …
Brief algorithm for vitamin D dosing. In all those cases, 25OH-D levels should be checked at 1–1.5 months after the initiation of Vit. D supplementation or the enlargement of Vit. D dose, respectively.
Pharmacologic Therapy for Vitamin D Deficiency - AAFP
2013年2月15日 · Vitamin D therapy may be given daily or weekly with equal effectiveness; the dosage depends on the degree of deficiency. (SOR: C, based on an RCT and cohort study.) The cumulative dosage is...
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. Research on vitamin D use for specific conditions shows: Cancer.
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...
Vitamin D Dosage Guide For Adults, Children - GoodRx
2023年10月2日 · For vitamin D levels below 25 nmol/L, the recommended dosage for adults and children ages 11 and older is 50,000 IU (1 capsule) once weekly. Adults should take it for 8 weeks, and children for 6 to 8 weeks.
Vitamin D for the Prevention of Disease | Endocrine Society
2024年6月3日 · For empiric supplementation, daily, lower-dose vitamin D is preferred over non-daily, higher doses. In the clinical trials included in the SR that reported on the mortality outcome, vitamin D dose ranged from 400 to 3333 IU [10 to 83 μg] daily equivalent. The estimated weighted average was average was approximately 900 IU (23 μg) daily.
How Much Vitamin D Should You Take For Optimal Health?
2023年6月23日 · Vitamin D recommended intake is 400–800 IU/day or 10–20 micrograms, depending on your age. What are the optimal blood levels of vitamin D? Doctors assess blood levels of vitamin D by...
Patient education: Vitamin D deficiency (Beyond the Basics)
2023年5月16日 · The "ideal" dose of vitamin D is determined by testing the individual's 25(OH)D level and increasing the vitamin D dose if the level is not within normal limits. Once a normal level is achieved, continued therapy with 800 international units (20 micrograms) of vitamin D per day is usually recommended.
Mayo Clinic Q and A: How much vitamin D do I need?
2017年4月25日 · Currently, different recommendations exist. 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.