Vitamin D is measured in international units (IU). Babies younger than 1 year old need 400 IU of vitamin D a day ... Health care providers might want some kids to take 600 to 1,000 IU daily. Some kids ...

It’s important to check how much vitamin D the tablets contain as they vary and it’s advised not to take more than 25 micrograms (µg) or 1000 IU (International Units) of vitamin D a day.

As a rule, younger people need less vitamin D than older people, regardless of sex. This article explains average vitamin D ...

With over half of us not getting enough of the ‘sunshine vitamin’, we look at the ... between 400 IU and 2000 IU [international units], but 800-1000 IU is the most popular amount sold.” ...

Vitamin D, the so-called “sunshine vitamin ... the recommendations are between 400 IU and 2000 IU [international units], but ...

The finding was an update from a 2018 recommendation that postmenopausal women should not supplement with 400 units or less of vitamin D and 1,000 milligrams or less of calcium for the primary ...

What are the results of the study on vitamin D and calcium ... Participants took 1000 milligrams of calcium carbonate with 400 International Units of vitamin D³ daily or a placebo, per the ...