Why is vitamin E 200 IU the dosage used on most supplements?
Not all supplements use 200 IU, but the reason you see it so frequently is that is many currently consider to be an appropriate daily dosage. However it’s important to realize that it is an amount far above the U.S. government’s recommended daily allowance for adults, which is 22.5 IU (international units). Is it safe to take large doses of vitamin E? That depends on what your definition of “large” is, but it is known that taking excessively large amounts can be harmful. One of the reasons for this is because it is a fat soluble vitamin. So unlike a water soluble vitamin (such as C) which leaves your body when you urinate, vitamin E can accumulate in your body. Therefore taking high doses over and over may cause a build up. In fact, dosages of 1000 mg have been linked to blood clotting and hemorrhaging. Some studies have even concluded that 400 IU is too high. However the National Institute of Health, Office of Dietary Supplements, has stated that the Tolerable Upper Intake Levels (ULs
