Q:

How much vitamin D do you need per day?

A:

Quick Answer

The recommended daily amount of vitamin D needed per day for adults and children is 600 international units. For those 71 years and older, the recommended dosage is 800 international units per day, according to WebMD.

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Full Answer

The body needs vitamin D to absorb calcium, which keeps bones and muscles strong. A lack of vitamin D and calcium in children can cause rickets, a rare disease that causes weak bones. Most people, however, get enough vitamin D since many foods are fortified with both calcium and vitamin D. Additionally, the body uses sunshine to make its own vitamin D, notes WebMD.

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