What is the meaning of 200 international units of calcium carbonate D3 granules eaten by children? Do you have one with 500 international units?

200 units of vitamin D3 means 200IU of vitamin D3, 1IU of vitamin D3=0.025μg of vitamin D3, and 200IU is 5μg of vitamin D3.

There are 500 international units of vitamin D on the market, but it is generally for the elderly. The recommended dose of vitamin D varies from country to country, but it used to be conservative: in Europe, the recommended dose of vitamin D is only 0 ~ 400 IU/d; In the United States, the recommended dose for women aged 5 1 ~ 70 years old is 400IU/d, and for women over 70 years old is 600 iu/d; The Canadian Osteoporosis Association recommends that adults consume at least 800 IU a day.

20 1 1 The Chinese Medical Association also pointed out in the Guide to Diagnosis and Treatment of Primary Osteoporosis that calcium and vitamin D are basic supplements for bone health. It is suggested that adults should take 200 IU of vitamin D every day, and the elderly should take 400 ~ 800 IU every day. Osteoporosis patients should also receive medication at the same time.

Extended data

international unit

Some drugs, such as vitamins, hormones, antibiotics, antitoxin biological products, etc. If the chemical composition is not constant or its quality standard can not be verified by physical and chemical methods so far, the biological experiment method is often used to verify its titer compared with the standard.

Through this bioassay, the lowest titer unit with certain biological efficacy is called "unit" (U); The standard unit determined through international negotiation is called International Unit (IU).

The conversion values of different elements are different (international regulations):

Vitamin A: 1IU=0.3μg and 1000μg= 1mg.

Vitamin E: 1IU= 1mg.

Conversion between IU (International Unit) and quality-some professional unit conversion methods! (IU 1U)

Conversion between international units and quality

1IUVa=0.33μg？ 1iu β -carotene = 0.6 μ g.

Retinol equivalent (μg) = va (μ g)+0.1.67× β -carotene (μ g)

1Ug Vd = 40iu 1IUVd = 0.025μg

1IU vitamin D=0.025μg vitamin D3.

1IU Ve = 1 mg Ve(DL-α- tocopherol acetate)

1 mgdl-α- tocopherol = 1. 1IU Ve

1 mgd-α- tocopherol = 1.49 international unit of vitamin e