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People take vitamin B12 injections due to their inability to absorb the essential nutrient from foods or dietary supplements. An estimated 1.5 to 15 percent of Americans suffer from vitamin B12 deficiency, reports the Un... More »

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A Vitamin B12 injection is a shot of Cyanocobalamin, a man-made form of Vitamin B12 as reported by Drugs.com. Cyanocobalamin is injected straight into the blood stream and is used to treat Vitamin B12 deficiency. More »

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Drugs.com reports that rapid weight gain is one of the common side effects of vitamin B12 injections. Swelling, diarrhea and a mild rash are also side effects that people commonly experience when they have a vitamin B12 ... More »

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Vitamin B12 shots are designed for people who have a deficiency in vitamin B12. According to Dr. Roy Benaroch on KevinMD.com, anemia, poor diet, depression, neuropathy and irritability are all causes of a deficiency in v... More »

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The Linus Pauling Institute indicates there is no upper tolerable limit established for vitamin B12 by the U.S. Food and Nutrition Board due to a lack of toxic effects associated with high levels of vitamin B12 intake, a... More »

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Academic websites, medical journals and government health websites are all very strong and reliable sources to learn more about vitamin B12. Often, these websites and journals are peer-reviewed and have been approved by ... More »

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Scientists and doctors have not found any toxic or adverse effects due to consumption of large amounts of vitamin B12 from food or from supplements, according to the Linus Pauling Institute at Oregon State University. Pa... More »

www.reference.com Health Medications & Vitamins Vitamins & Supplements