Vitamin D - Mayo Clinic
Mar 21, 2025 · Taking a vitamin D supplement or a multivitamin with vitamin D may help improve bone health. The recommended daily amount of vitamin D is 400 international units (IU) for …
The daily upper limits for vitamin D include intakes from all sources—food, beverages, and supplements—and are listed below in micrograms (mcg) and international units (IU).
How much Vitamin D should you take? - Drugs.com
Aug 11, 2025 · Most adults need 600–800 International Units (IU), or 15–20 micrograms (mcg), of vitamin D per day to support bone and immune health. The exact amount depends on your …
What Vitamin D Dosage Is Best? - Healthline
Dec 20, 2024 · 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 …
Vitamin D: How Much to Take Per Day and Max Dose - GoodRx
Aug 1, 2025 · According to most medical experts, the recommended dietary allowance (RDA) of vitamin D for adults up to age 70 is 600 IU. But some professional organizations recommend …
What Are the Normal Vitamin D Levels by Age? - Verywell Health
Nov 30, 2025 · Most adults need at least 15 micrograms (mcg)—or 600 international units ( IU)—of vitamin D daily to maintain healthy levels. 1 The amount recommended for children …
How much vitamin D do you need? - Harvard Health
Jan 31, 2019 · While some people argue for much higher levels, the IOM report concluded that vitamin D blood levels above 20 ng/ml are adequate for maintaining healthy bones, and that …
Vitamin D deficiencies: What to know - MD Anderson Cancer Center
How much vitamin D should you be getting – and what should you do if you need more? We called on a dietitian and a dermatologist for answers. Read on for their tips on how to safely …
How much do i need? For most adult women and men at least 800 to 1,000 international units (IU) per day are recommended. Getting too much vitamin D is rare. Talk to your doctor or …
Vitamin D - Health Professional Fact Sheet - Office of Dietary …
The Food and Nutrition Board at the National Academies of Sciences, Engineering, and Medicine has established Recommended Dietary Allowances and Adequate Intakes for vitamin D.