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.
Vitamin A seems to stimulate the immune system and the production of white blood cells. Often when some kind of infection like the flu or a cold hits an intake of 100,000 to 150,000 IU for not more than three days will effectively turn on the immune system to the extent that the infection is stopped.