There are two different types of vitamin A. The first type, preformed vitamin A, is found in meat, poultry, fish, and dairy products. The second type, provitamin A, is found in fruits, vegetables, and other plant-based products.The most common type of provitamin A in foods and dietary supplements is beta-carotene.here are two different types of vitamin A. The first type, preformed vitamin A, is found in meat, poultry, fish, and dairy products. The second type, provitamin A, is found in fruits, vegetables, and other plant-based products.
Do not take VALIUM for a longer time than your doctor has prescribed. VALIUM should be taken for short periods only (for example 2 to 4 weeks) unless advised by your doctor. Do not stop taking VALIUM or lower the dose without first checking with your doctor.
Government guidelines recommend 55 micrograms (mcg) of selenium per day, but for optimal health and disease prevention, up that to 200 mcg per day. And we believe it's best to get this mineral from food, not supplements. Too much selenium can be toxic, so don't overdo it -- keep your daily intake below 400 mcg.