Vitamin A
Vitamin A is comprised of compounds that are important for vision, cell division, growing bones, reproduction, and cell differentiation. Vitamin A helps maintain the immune system which boosts white blood cell count allowing the body to ward off infections, bacteria and viruses. Lymphocytes, which battle infection, also benefit greatly from sufficient Vitamin A intake.
Solaray's Emulsified Dry Vitamin A 25000IU 60Caps
Solaray Emulsified Dry Vitamin A contains 15,000 IU beta carotene 10.000 IU retinyl palmitate.Solaray Dry Vitamin provides 25,000 IU of total Vitamin A activity as 15,000 IU Beta Carotene and 10,000 IU Retinyl Palmitate. Acacia has been added to help emulsify or disperse the natural oil characteristic of Vitamin A. This unique product provides you with the benefits of Vitamin A in a less oily form that is easier to digest.Vitamin A is absolutely essential for the proper growth of children, vitamin A or retinol is also needed by both children and adults for proper vision (it can prevent and sometimes cure night blindness) and for healthy skin and mucous membranes lining the body's inner cavities. In addition, vitamin A helps the body fight infection reduces the risk of breast cancer. BETA-CAROTENE, may also reduce the risk of some cancers. The latest good news is that vitamin A and beta-carotene may reduce the transmission of AIDS from mother to infant.Suggested Dosage: As a dietary supplement, take 1 capsule daily with a meal or a glass of water. Store in a cool, dry place.Ingredients per capsule: Vitamin A(from Retinyl Palmitate and 60% as Beta Carotene) 25000 IU; Vitamin A Support Base(from Carrot Concentrate) 230 mgOther Ingredients: Gelatin (capsule)and acacia.
Carlson Lab's Vitamin A with Pectin 25,000 IU 100 caps
Vitamin A with Pectin 100 caps 25,000 IUDietary SupplementSupplement FactsServing Size: 1 gelServings Per Container: 100Amount per softgel:Vitamin A (from fish liver oil) 25,000 IUOther ingredients:Soybean oil, gelatin, glycerin, beeswax, apple and/or citrus pectin, lecithin.Directions:Adults take one soft gel three times weekly. Do not exceed recommended dosage. Do not take if you are pregnant or planning to become pregnant.Warning:The recommended daily serving of this product contains more than 10,000 IU of Vitamin A from retinol. Large amounts of Vitamin A from retinol are known to cause birth defects.Natural source and color. Free of preservatives, milk, wheat, yeast, corn, sugar, salt.Some ingredient separation may occur within soft gels.Vitamin A is an essential nutrient in human nutrition. Each soft gel contains 25,000 IU of Vitamin A from fish liver oil. The Vitamin A is dispersed with fruit pectin.Potency and quality guaranteed.
Natural Factors Vitamin A 10,000 I.U. 180Sg
Pesticide-free Description : Pesticide-free Natural Factors Vitamin A promotes healthy vision, skin and mucous membranes, maintains strong bones and teeth and supports the body?s natural defenses.* Vitamin A is an important basic supplement to the daily diet. Directions : 1 softgel per day or as directed by a health professional. Notes: Contains no artificial preservatives, color or sweeteners; no corn, dairy, starch, wheat or yeast. Warnings: Keep out of reach of children.
Source Naturals Vitamin A Palmitate 10000IU 250Tabs
10,000 IU Vitamin A is an essential nutrient, required for normal vision and for healthy skin and mucous membranes. It is also needed by the thymus gland. Beta carotene is a nontoxic precursor (building block) of vitamin A and a major component of the body's natural antioxidant defenses. Supplement Facts for 10000 IUserving size: 1 tablet Amount %DV Vitamin A (as palmitate) 10000 IU 2 Other Ingredients: dibasic calcium phosphate, microcrystalline cellulose, stearic acid, magnesium stearate and colloidal silicon dioxide.Suggested Use: One tablet daily.Warning: Pregnant or breastfeeding women take only 1/2 tablet per day. Do not exceed a total intake of 5,000 IU of preformed vitamin A (palmitate) daily, and consult your health care professional before using this product. 10000 IU SN0829 250 tabs
FoodScience's Natural Vitamin A (25,000 IU) 100Caps
Description: Natural Vitamin A (25,000 IU) 100Caps.--- A dietary supplement available in 10,000 IU and 25,000 IU softgels that supports skin, eye and immune system health.*? About Vitamin A: Vitamin A is a fat-soluble vitamin with multiple functions in the body. It helps cells differentiate, an essential part of cell reproduction. Vitamin A also has antioxidant properties essential for proper immune system functioning.* A lack of Vitamin A can cause skin to become dry and hardened, increased susceptibility to infection.? Who is likely to be deficient of Vitamin A? People who limit their consumption of liver, dairy foods and beta-carotene-containing vegetables. The elderly, people who have problems absorbing nutrients from the intestine and those who abuse mineral laxatives. People with hypothyroidism have an impaired ability to convert beta-carotene to Vitamin A. For this reason, some doctors suggest taking supplemental Vitamin A if they are not consuming adequate amounts in their diet. The earliest deficiency sign is poor night vision. Deficiency symptoms can also include dry skin.? Symptoms of Vitamin A deficiency include: --Reduced night vision --Night blindness --Dry eyes --Rough skin --Dry skin --Poor wound healing? Supplement Facts:25,000 I.U.Serving Size: 1 SoftgelAmount Per ServingVitamin A (from fish liver oil) 25,000 IUOther ingredients: soybean oil, gelatin, glycerin, water.? Contains: Soy and fish (cod, halibut and salmon).Warning: Studies indicate that levels of Vitamin A inexcess of 4,000 IU daily may increase the incidence ofbirth defects. If pregnant or nursing, consult your health carepractitioner before taking this product.Warning: This product contains levels of Vitamin A in excessof 10,000 IU, a chemical known to the State of California tocause birth defects or other reproductive harm.Directions: As a dietary supplement, take 1 softgeldaily with a meal.Sold Exclusively Through Retailers.
Vitamin A Benefits
Vitamin A promotes a good surface lining of the eyes, lungs, intestines, and urinary tract. When these linings break down, it is easier for bacteria to invade the body and start infections. This vitamin also is good for the skin and mucous membranes, since they are both barriers that keep out harmful viruses and bacteria.
In general, there are two kinds of vitamin A. It depends on if the source of food comes from a plant or an animal.
Vitamin A located in animals is named preformed vitamin A. It is absorbed into the body in the form of retinol. This is one of the most active forms of this vitamin. Good sources include whole milk, liver, and fortified food products. Retinol can be transformed into retinoic acid and retinal throughout the body.
Vitamin A located in bright fruits and vegetables is named provitamin A carotenoid. They can be made into retinol. In this country, approximately 26% of this vitamin is eaten by men, while 34% is eaten by women. Commonly found carotenoids that are rich in provitamin A in plants are alpha-carotene, beta cryproxanthin, and beta-carotene. Beta-carotene is most efficient in making retinol. Alph-carotene and beta-crytoxanthin are also changed into vitamin A, but not as good.
Less than 10% of carotenoids can be changed into Vitamin A in the body. Certain carotenoids do not have vitamin A, but are healthy. These include lycopene, zeaxanthin, and lutein. Medical experts urge that a person eat all foods rich in carotenoids to promote overall health.
Certain provitamin A carotenoids have been proven to act as antioxidants. However, this has not been constantly shown in humans. Antioxidants are good for the body because they fight off cells from being invaded from free radicals. Free radicals can damage cells and lead to chronic diseases.
Retinol comes in foods that are from animals like eggs, liver, and milk. Most fat free dairy products are fortified with vitamin A to replace the lost amount when the fat is taken away. Fortified breakfast cereals also have vitamin A. Provitamin A carotenoids are found in dark colored fruits and vegetables. A recent survey has indicated that main contributors in the diet of retinol are milk. eggs, beef liver, and fortified breakfast cereals. Major contributors of provitamin A carotenoids are spinach, carrots, cantaloupes, and sweet potatoes.
Vitamin A from foods that originate from animals is absorbed well and efficiently used in the body. Foods high in Vitamin A from plants are not as easily absorbed.
There is no recommended daily allowance for beta-carotene or other provitamin A carotenoids. Science claims that eating between 3-6 mg of beta carotene each day will keep blood levels of beta carotene in a good range that is linked to a low risk of chronic diseases. A diet that has five or more servings of vegetables and fruit every day and has leafy and dark green vegetables mixed with yellow and orange fruits, should give enough carotenoids and beta carotene.
Vitamin A Deficiency
A deficiency in vitamin A is normal in developing countries, but rare in the United States. Up to 500,000 children that are malnourished in these other countries become blind from having a vitamin A deficiency. In this country, vitamin A deficiency is often linked to a strict diet and drinking too much alcohol. Severe deficiency in zinc, also linked to strict diet, often comes with a vitamin A deficiency. Zinc is necessary to make retinol binding protein that carries vitamin A. Therefore, a zinc deficiency halts the body's ability to carry vitamin A from the liver to the rest of the body's tissues.
Night blindness is one of the beginning signs of a deficiency in vitamin A. In ancient Egypt, it is believed that night blindness is cured by consuming liver, a rich source of this vitamin. A deficiency in vitamin A leads to blindness by drying out the cornea and harming the retina and cornea.
A deficiency in vitamin A lessens the body's ability to fight infection. In countries where vitamin A deficiency is common and immunizations are low, millions of young children perish every year from complications from diseases like measles. In people with a vitamin A deficiency, cells that line the lungs lose the capability to remove microorganisms that cause disease. This leads to pneumonia that is linked with vitamin A deficiency.
There is a growing interest in early signs of a deficiency in vitamin A. This is known as low storage levels of vitamin A that do not lead to outward symptoms of deficiency. This slight vitamin A deficiency heightens a child's risk of getting infections like diarrhea or respiratory illness, lessens the rate of growth, slows the development of bones, and lessens the likelihood of living after getting a severe illness.
A deficiency occurs when vitamin A is lost through diarrhea or overall poor intake. This is often seen with protein energy malnutrition. Low levels of blood retinol is a sign of depleted vitamin A. This happens with vitamin A deficiency or can result from low intake of calories, protein, and zinc. A deficiency of iron also affects vitamin A metabolism. Iron supplements help individuals raise iron levels and vitamin A.
Keep in mind, drinking too much alcohol depletes the storage of vitamin A. Diets high in alcohol do not provide adequate amounts of this vitamin. It is vital for people who drink a lot of alcohol to include quality sources of vitamin A in the diet. Vitamin A supplements should not be taken by people who abuse alcohol, since their livers may be susceptible to possible toxicity from too much of this vitamin. A physician must evaluate the situation and determine if there is a need for supplements of vitamin A.