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

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   Overview. Vitamin B12 is an essential vitamin found in foods such as meat, fish, and dairy. It can also be made in a lab and is often taken with other B vitamins. Vitamin B12 is required for the ...

2. www.webmd.com › a-to-z-guides › vitamin-b12-testVitamin B12 Test & Normal Vitmain B12 Levels: Procedure ...

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   2023年5月29日 · The normal range for vitamin B12 can vary slightly depending on the lab. But a normal level of vitamin B12 in your bloodstream is generally between 190 and 950 picograms per milliliter (pg/mL ...

3. 其他人也問了

   What is vitamin B12 & methylcobalamin?

   • Vitamin B12 is an essential vitamin found in foods such as meat, fish, and dairy. It can also be made in a lab and is often taken with other B vitamins. Vitamin B12 is required for the function and development of many parts of the body, including the brain, nerves, and blood cells. Methylcobalamin is the active form of vitamin B12.

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

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   Is vitamin B12 safe?

   • Vitamin B12 is considered safe even in large doses. When applied to the skin: Vitamin B12 is likely safe for most people when used appropriately. When sprayed into the nose: Vitamin B12 is likely safe for most people. Vitamin B12 is considered safe even in large doses. When taken by mouth: Vitamin B12 is likely safe for most people.

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

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   What is the active form of vitamin B12?

   • Methylcobalamin is the active form of vitamin B12. Cyanocobalamin, which must be processed by the body into the active form, is the most common type used in supplements. People commonly use vitamin B12 for vitamin B12 deficiency, cyanide poisoning, and high levels of homocysteine in the blood.

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

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   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

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4. www.webmd.com › diet › b12-rich-foodsFoods You Should Eat if You Have a B12 Deficiency - WebMD

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   2023年1月16日 · This is how much B12 you’ll find in a 3-ounce serving of these foods: Cooked clams: 84.1 micrograms. Steamed mussels: 20.4 micrograms. Cooked Atlantic mackerel: 16.1 micrograms. Steamed Alaska ...

5. www.webmd.com › drugs › 2Vitamin B-12 Oral: Uses, Side Effects, Interactions, ...

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   2023年3月28日 · Cyanocobalamin is a man-made form of vitamin B12 used to prevent and treat low blood levels of this vitamin. Most people get enough vitamin B12 from their diet. Vitamin B12 is important to...

6. www.webmd.com › diet › featuresThe Myths and Truths of Vitamin B12 - WebMD

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   2023年1月13日 · Symptoms of B12 deficiency, which can develop over years, may include fatigue, pale skin, numb or tingly hands or feet, and confusion. Left untreated, too little vitamin B12 can ultimately lead to ...

7. www.webmd.com › diet › health-benefits-vitamin-b12Vitamin B12: Health Benefits, Safety Information, Dosage, ...

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   2022年9月21日 · Amounts and Dosage. The recommended daily intake of vitamin B-12 for adults is 2.4 micrograms. Vitamin B12 is also found in animal products, such as eggs, meat, fish, poultry, milk, and some ...

8. www.webmd.com › diet › what-are-plant-food-sources-vitamin-b12Vitamin B12: What Are Its Plant Sources? - WebMD

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   2024年2月12日 · Eating 4 grams (g) of dried nori would meet your daily vitamin B12 needs. Nori is available in most Asian food markets. You can also order it online. Shiitake mushrooms. Shiitake mushrooms are ...