But what is commonly sold as multivitamins and minerals is making a fool of the buyer. This is the case because multivitamins typically combine a very wide range of ingredients, most of which are not needed as supplements. Of those that do make sense as supplements, the amounts found in multivitamin capsules are mostly irrelevant. Here a rundown of typical ingredients and our comments on them. 200 mcg per day is what we should consume as dietary intake.
Selenium protects against some cancers.
If you prefer natural sources, two or three brazil nuts a day will get you enough selenium, and you don't have to worry about harmful chemistry in pills. If you eat some tomatoes and carrots, you get a fair share of beta-carotene. Some B-vitamins as supplements make sense. You can't do much wrong by taking them. According to Dr. Weil, high doses will increase the instance of remembered dreams.