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DescriptionVitamins (VYE-ta-mins) are compounds that you must have for growth and health. They are needed in small amounts only and are usually available in the foods that you eat. Vitamin B 12 is necessary for healthy blood. Cyanocobalamin and hydroxocobalamin are man-made forms of vitamin B 12 . Some people have a medical problem called pernicious anemia in which vitamin B 12 is not absorbed from the intestine. Others may have a badly diseased intestine or have had a large part of their stomach or intestine removed, so that vitamin B 12 cannot be absorbed. These people need to receive vitamin B 12 by injection. Some conditions may increase your need for vitamin B 12 . These include:
In addition, persons that are strict vegetarians or have macrobiotic diets may need vitamin B 12 supplements. Increased need for vitamin B 12 should be determined by your health care professional. Lack of vitamin B 12 may lead to anemia (weak blood), stomach problems, and nerve damage. Your health care professional may treat this by prescribing vitamin B 12 for you. Claims that vitamin B 12 is effective for treatment of various conditions such as aging, allergies, eye problems, slow growth, poor appetite or malnutrition, skin problems, tiredness, mental problems, sterility, thyroid disease, and nerve diseases have not been proven. Many of these treatments involve large and expensive amounts of vitamins. Injectable vitamin B 12 is given by or under the supervision of a health care professional. Some strengths of oral vitamin B 12 are available only with your health care professional's prescription. Others are available without a prescription. Vitamin B 12 is available in the following dosage forms:
Importance of DietVitamin B 12 is found in various foods, including fish, egg yolk, milk, and fermented cheeses. It is not found in any vegetables. Ordinary cooking probably does not destroy the vitamin B 12 in food. Vitamins alone will not take the place of a good diet and will not provide energy. Your body also needs other substances found in food, such as protein, minerals, carbohydrates, and fat. Vitamins themselves often cannot work without the presence of other foods. The daily amount of vitamin B 12 needed is defined in several different ways.
Normal daily recommended intakes in micrograms (mcg) for vitamin B 12 are generally defined as follows:
Brand NamesSome commonly used brand names are: In the U.S.—
In Canada—
Date Revised: 06/23/2000
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Copyright © 2006 Healthopedia.com
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The information provided herein is intended for your general knowledge only and is not a substitute for medical advice or treatment for specific medical conditions. The information should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call your local emergency number for all medical emergencies. Use of this online service is subject to the disclaimer and the terms and conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Page Last Updated: 30th May, 2006 |
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