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.
Selenium is LIKELY SAFE for most people when taken by mouth in doses less than 400 mcg daily, short-term. Selenium is POSSIBLY UNSAFE when taken by mouth in high doses or for long-term. Taking doses above 400 mcg can increase the risk of developing selenium toxicity.