Definition Vitamin A is a fat-soluble vitamin. Alternative Names Retinol; Retinal; Retinoic acid; Carotenoids Function Vitamin A helps form and maintain healthy skin, teeth, skeletal and soft tissue, mucus membranes, and skin. It is also known as retinol because it produces the pigments in the retina of the eye. Vitamin A promotes good vision, especially in low light. It may also be needed for reproduction and breast-feeding. Retinol is an active form of vitamin A. It is found in animal liver, whole milk, and some fortified foods. Carotenoids are dark-colored dyes (pigments) found in plant foods that can turn into a form of vitamin A. There are more than 500 known carotenoids. One such carotenoid is beta-carotene. Beta-carotene is an antioxidant. Antioxidants protect cells from damage caused by substances called free radicals. Free radicals are believed to contribute to certain chronic diseases and play a role in the aging processes. Food sources of carotenoids such as beta-carotene may reduce...
Definition The 25-hydroxy vitamin D test is the most accurate way to measure how much vitamin D is in your body. In the kidney, 25-hydroxy vitamin D changes into an active form of the vitamin. The active form of vitamin D helps control calcium and phosphate levels in the body. This article discusses the blood test used to measure the amount of 25-hydroxy vitamin D. Alternative Names 25-OH vitamin D test; Calcidiol 25-hydroxycholecalciferol test How the test is performed Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood. Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm. Once the blood has been collected, the needle is rem...
Generic Name: EMOLLIENTS - TOPICAL Vitamin E-Vitamins A & D Top Uses
This medication has 2 types of ingredients (emollient,
keratolytic) that work together to treat or prevent dry, rough, scaly, itchy
skin (e.g., eczema, keratosis, xerosis). Dry skin is caused by a loss of water
in the upper layer of the skin. Emollients are substances that soften and
moisturize the skin and decrease itching and flaking. Emollients/moisturizers
work by forming an oily layer on the top of the skin that traps water in the
skin. Petrolatum, lanolin, mineral oil, and dimethicone are common
Lactic acid, salicylic acid, and urea are keratolytics.
They increase moisture in the skin by softening/dissolving the horny substance
(keratin) holding the top layer of skin cells together. This helps the dead
skin cells fall off and helps the skin keep more water in. Higher strengths of
urea are used to treat corns, callous, and some nail problems (e.g., ...
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