
	Vitamin A Information

Vitamin A Information
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VITAMIN A OVERVIEW

Vitamin A, also called retinol, is a fat-soluble vitamin that is readily destroyed upon exposure to heat, light, or air. The vitamin has a direct role in vision and is a component of a pigment present in the retina of the eye. It is essential for the proper functioning of most body organs and also affects the functioning of the immune system.

HOW THIS VITAMIN WORKS IN YOUR BODY

Vitamin A Information The larger the quantity of pills you purchase, the cheaper the unit cost becomes. Buy less often, but increase the size of your order to get the cheapest vitamins, minerals & supplements. Best value buys are from 90 pill bulk purchases at wholesale discount rates.

VITAMIN A NATURAL SOURCES

Vitamin A is found in many foods. Here are just a few :

Liver
Cheddar cheese
Broccoli
Carrots
Spinach
Pumpkin
Mangoes
Watermelon
Winter squash

SYMPTOMS OF A VITAMIN A DEFICIENCY

Vitamin A Information People who limit their consumption of liver, dairy foods, and beta-carotene-containing vegetables can develop a vitamin A deficiency. Extremely low birth weight babies (2.2 pounds or less) are at high risk of being born with a deficiency, and vitamin A shots given to these infants have been reported in double-blind research to reduce the risk of lung disease. Very old people with type 2 diabetes have shown a significant age-related decline in blood levels of vitamin A, irrespective of their dietary intake.

Vitamin A deficiency results in various disorders that most commonly involve the eye and the epithelial tissues-the skin and the mucous membranes lining the internal body surfaces. An early symptom of vitamin A deficiency is the development of night blindness, and continued deficiency eventually results in loss of sight. If deficiency is prolonged, the skin may become dry and rough. Vitamin A deficiency may also result in defective bone and teeth formation. Without an adequate amount of vitamin A, your body is vulnerable to a whole host of infectious creatures that can cause anything from measles to AIDS. Those who lack vitamin A on their defense teams also face increased risk of cancer and blindness.

HOW TO TAKE VITAMIN A

For most people, up to 25,000 IU (7,500 mcg) of vitamin A per day is considered safe. However, people over age 65 and those with liver disease should probably not supplement with more than 15,000 IU per day, unless supervised by a doctor. In women who could become pregnant, the maximum safe intake is being re-evaluated. However, less than 10,000 IU (3,000 mcg) per day is generally accepted as safe. There is concern that larger intakes could cause birth defects. Whether the average person would benefit from vitamin A supplementation remains unclear.

Vitamin A Information Take vitamin A exactly as directed by your doctor or as directed on the package. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you. Take each dose with a full glass of water. Measure the liquid forms of vitamin A with the dropper provided. Do not take more vitamin A than is prescribed for you or than is recommended on the package. Too much vitamin A can be dangerous.

VITAMIN A CONTRAINDICATIONS

Before taking vitamin A, talk to your doctor, pharmacist, or health care professional if you have any other medical conditions, allergies, or if you take other medicines or other herbal/ health supplements. Do not take a vitamin A supplement without first talking to your doctor if you are pregnant. Although some vitamin A is necessary for the normal development of a baby, doses in excess of the U.S. recommended dietary allowance (RDA) of 5,000 USP units per day may cause birth defects. Do not take a vitamin A supplement without first talking to your doctor if you are breast-feeding a baby.

VITAMIN A MISSED DOSE & OVERDOSE :

Vitamin A Missed Dose :

Take the missed dose as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take only the next regularly scheduled dose. Do not take a double dose of vitamin A.

Vitamin A Overdose :

Excessive intake of vitamin A causes a toxic condition. The symptoms may include nausea, coarsening and loss of hair, drying and scaling of the skin, bone pain, fatigue, and drowsiness. There may also be blurred vision and headache in adults, and growth failure, enlargement of the liver, and nervous irritability in children.

VITAMIN A INTERACTIONS

Before taking vitamin A, tell your doctor if you are taking any of the following medicines:

oral birth control pills,
cholestyramine (Questran), or
mineral oil.

You may not be able to take vitamin A, or you may require a dosage adjustment or special monitoring during your treatment if you are taking any of the medicines listed above. Drugs other than those listed here may also interact with vitamin A. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines or herbal/ health supplements.

VITAMIN A STORAGE

Keep Vitamin A in the container it came in, tightly closed, and out of reach of children. Store Vitamin A at room temperature and away from excess heat and moisture (not in the bathroom).

IMPORTANT NOTE

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the supplement is safe, appropriate, or effective for you. Consult your healthcare professional before using any supplement.