qu'est-ce que c'est? what is that? what is it? what does that mean? Synonyms kÃ©saco; Related terms . qu'est-ce que
Vitamins A, D and E are fat-soluble vitamins measured in international units. An international unit, or IU, is used to measure fat-soluble vitamins. Vitamins A, D and E are measured using international units to calculate recommended intakes, deficiencies and toxicities for healthy people. Recommendations vary based on age and gender.
International units are used to quantify vitamins, hormones, some medications, vaccines, blood products, and similar biologically active substances.espite its name, IU is not part of the International System of Units used in physics and chemistry. The IU should not be confused with the enzyme unit, also known as the International unit of enzyme activity and abbreviated as U.