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1. www.mayoclinic.org › drugs-supplements-vitamin-b12Vitamin B-12 - Mayo Clinic

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   Aug 10, 2023 · Learn about vitamin B-12, a nutrient that helps form red blood cells, metabolize food and maintain nerve function. Find out how to get enough vitamin B-12 from food or supplements, and what to do if you are deficient.

2. en.wikipedia.org › wiki › Vitamin_B12Vitamin B12 - Wikipedia

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   Vitamin B12, also known as cobalamin, is a water-soluble vitamin involved in metabolism. [2] It is one of eight B vitamins. It is required by animals, which use it as a cofactor in DNA synthesis, and in both fatty acid and amino acid metabolism. [3]

   • Bioavailability: Readily absorbed in distal half of the ileum.
   • Metabolism: liver

   • Formula: C₆₃H₈₈CoN₁₄O₁₄P

3. www.webmd.com › diet › vitamin-b12-deficiencyVitamin B12 Deficiency: Causes, Symptoms, and Treatment - WebMD

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   Jan 14, 2023 · Learn about the functions, sources, and recommended amounts of vitamin B12, a nutrient that helps make DNA and red blood cells. Find out the causes, symptoms, and treatment of vitamin B12 deficiency, and how to prevent it with diet or supplements.

4. www.webmd.com › vitamins › aiVITAMIN B12 - Uses, Side Effects, and More - WebMD

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   Vitamin B12 is an essential vitamin for many parts of the body, especially the brain, nerves, and blood cells. Learn about its benefits, risks, dosing, and interactions for various conditions, such as deficiency, cyanide poisoning, and canker sores.

5. www.healthline.com › nutrition › vitamin-b12Signs and Symptoms of Vitamin B12 Deficiency - Healthline

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   Learn how to recognize the signs and symptoms of low or deficient vitamin B12 levels, such as fatigue, pale skin, headaches, depression, and more. Find out the causes, diagnosis, and treatment of B12 deficiency, a common condition that can be improved with B12 supplements or injections.

   • What happens when your vitamin B12 is low?

     When your B12 levels are low, you may have no symptoms at first, but over time, you may experience some or all of these symptoms: fatigue pale or y...
   • What is the fastest way to fix B12 deficiency?

     Treatment of B12 deficiency typically includes oral supplements or injections.
   • What is the main cause of vitamin B12 deficiency?

     Typically vitamin B12 deficiency develops because you're not eating enough B12-rich foods like fish and shellfish, organ meats, and eggs. For examp...
   • What are the 4 stages of B12 deficiency?

     The 4 stages of B12 deficiency include (31): Stage 1: decreased levels of vitamin B12 in your blood Stage 2: low levels of vitamin B12 in your cell...

6. ods.od.nih.gov › factsheets › Vitaminb12-HealthVitamin B12 - Health Professional Fact Sheet

   ods.od.nih.gov › factsheets › Vitaminb12-Health

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   Vitamin B12 is a water-soluble vitamin that is naturally present in some foods, added to others, and available as a dietary supplement and a prescription medication. Because vitamin B12 contains the mineral cobalt, compounds with vitamin B12 activity are collectively called cobalamins [ 1 ].

7. People also ask

   What is vitamin B12 used for?

   • People commonly use vitamin B12 for vitamin B12 deficiency, cyanide poisoning, and high levels of homocysteine in the blood. It is also used for canker sores, cataracts, Alzheimer disease, osteoporosis, fatigue, and many other conditions, but there is no good scientific evidence to support most of these other uses. Uses & Effectiveness ?

   VITAMIN B12 - Uses, Side Effects, and More - WebMD

   www.webmd.com/vitamins/ai/ingredientmono-926/vitamin-b12

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   How do you treat vitamin B12 deficiency?

   • Injecting vitamin B12 as a shot for 10 days followed by monthly injections is effective for treating this condition. Vitamin B12 shots can only be given by a healthcare provider. Vitamin B12 deficiency. Taking vitamin B12 by mouth, as a shot, or inhaling through the nose can treat and prevent vitamin B12 deficiency.

   VITAMIN B12 - Uses, Side Effects, and More - WebMD

   www.webmd.com/vitamins/ai/ingredientmono-926/vitamin-b12

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   What is the bioavailability of vitamin B12?

   • For example, the bioavailability of vitamin B12 appears to be about three times higher in dairy products than in meat, fish, and poultry, and the bioavailability of vitamin B12 from dietary supplements is about 50% higher than that from food sources [ 18-20 ]. A variety of foods and their vitamin B12 levels per serving are listed in Table 2.

   Vitamin B12 - Health Professional Fact Sheet

   ods.od.nih.gov/factsheets/Vitaminb12-HealthProfessional/

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   What is a vitamin B12 molecule called?

   • Because vitamin B12 contains the mineral cobalt, compounds with vitamin B12 activity are collectively called cobalamins [ 1 ]. Methylcobalamin and 5-deoxyadenosylcobalamin are the metabolically active forms of vitamin B12.

   Vitamin B12 - Health Professional Fact Sheet

   ods.od.nih.gov/factsheets/Vitaminb12-HealthProfessional/

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8. www.verywellhealth.com › vitamin-b12-5083479Vitamin B12: Uses, Benefits, and Food Sources - Verywell Health

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   Oct 18, 2022 · Vitamin B12 helps your body produce energy by converting carbohydrates into glucose. Vitamin B12 also helps the nervous system function effectively. Working together with vitamin B9 (folate), it helps iron function better and helps the body to make healthy red blood cells. Together, folate and vitamin B12 work to produce S-adenosylmethionine ...