How many mg in iu

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What does an IU measure in vitamins? The polarity of these molecules allows them to dissolve in water or water-based solvents. Because these vitamins are soluble in water, they can be easily excreted from the body in urine. There is little danger of a build-up of excess amounts of water-soluble vitamins in the body. The downside of water solubility is the need to constantly replace the vitamins either by eating foods rich in these nutrients or taking vitamin supplements.

Fat -soluble molecules are non-polar and cannot be dissolved in water. They include vitamins A, D, E and K. Fat-soluble vitamins are stored in the liver and adipose tissue, and the body eliminates these vitamins more slowly than water-soluble vitamins. Because they are stored for long periods of time, these vitamins can accumulate in the body.

Taking excessive dosages of fat-soluble vitamins can have a toxic effect because they linger in the body for longer periods of time and cannot easily be purged. Supplement labels provide a recommended dietary allowance RDA to inform consumers of the average amount of a specific vitamin they should consume daily. The RDA varies according to age and gender because each stage of life and gender has its own nutritional requirements.

Unless otherwise specified, the RDA on a supplement label refers to both genders older than four years. Vitamin A: There are two widely available preparations of vitamin A: retinol and beta carotene. The IU equivalent of vitamin A in the retinol format is 0.

The value for beta carotene is 0. Converted to milligrams, this amount equals 0. Vitamin E: Vitamin E is available in two formats: d-alpha-tocopherol, a natural source, and dl-alpha-tocopherol, a synthetic source.

For a vitamin, consider contacting the vitamin manufacturer - their contact information is usually listed on the bottle. We've included mass equivalents of 1 IU for selected vitamins below. To convert this to mcg, using the information above, I would multiply it by 0.

Conversely, if the soft gel capsule was described as 'mcg of Vitamin A as retinol' and I wanted to convert to IU, I would divide it by 0. Note that the information contained here is purely for casual interests and is not intended to replace your doctor's advice. Please use it at your own risk. As with all calculations where health could suffer from inaccurate conversions, you are advised to check with a health professional before taking a dosage of any vitamin or supplement. If you wish to convert between micrograms mcg and milligrams mg you can do so using the mcg to mg converter.

Should you be interested, we've covered the conversion of milligrams to milliliters mg to ml in an article here.