In some countries, vitamin D is listed in micrograms, and the relationship is as follows: 2.5 mcg (micrograms) = 100 IU. 5 mcg = 200 IU. 10 mcg = 400 IU. 15 mcg = 600 IU. 20 mcg = 800 IU.

See the foods and drinks that are a good source of Vitamin D according to health experts at the NHS and Holland and Barrett.

How much vitamin D do I need? Children from the age of one and adults need 10 micrograms (mcg) of vitamin D a day, according to the NHS. Babies up to the age of 1 year need 8.5 to 10 micrograms of ...

After age 70, the RDA increases to 800 IU or 20 mcg per day. Other experts suggest we ... 30 ng/mL Even though there’s been increased attention on vitamin D deficiencies – and an estimated 10 million ...

How much vitamin D do I need? Children from the age of one and adults need 10 micrograms (mcg) of vitamin D a day, according to the NHS. Babies up to the age of 1 year need 8.5 to 10 micrograms ...