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what is the maximum daily dose of vitamin b12

A 45-year-old female asked:
Dr. Klaus d Lessnau
35 years experience Pulmonary Critical Care
1000 micro: Equals one milligram this dose works for most people. See doc if any trouble.
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Dr. Kelty Baker
27 years experience Hematology
B12 deficiency: The usual dose for vitamin B12 orally is 1 mg (1000 mcg) orally once daily. Some people need 2 mg (2000 mcg). It is never necessary to take more than ... Read More
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Dr. Pamela Pappas
41 years experience Psychiatry
Interesting question: Adults generally need 2.6 micrograms b12/day. To replace deficiencies, im shots bypass gut absorption problems that can contribute to deficiency in th ... Read More
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A 32-year-old member asked:
Dr. Calvin Weisberger
50 years experience Cardiology
Fish oil: Fish oil and B12 are compatible.
A 29-year-old female asked:
Dr. Grace Akoh-Arrey
15 years experience Pharmacology
Try sublingual tabs: Try the sublingual tablets, then get your levels tested in 3-6 months. Place the tablet beneath your tongue/allow it to dissolve.Can be taken with /w ... Read More
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A 27-year-old female asked:
Dr. Gurmukh Singh
48 years experience Pathology
No: To improve your iron level, if that is needed, you should take oral iron supplement and multivitamins. Glutathione is only lightening your wallet but ... Read More
A 26-year-old female asked:
Dr. Michio Abe
25 years experience Internal Medicine
Vitamin B12: You can take oral vitamin B12 of 1, 000mcg daily. It's not necessarily helpful for energy or heart health, especially if you are not B12 deficient. Pr ... Read More
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A 33-year-old member asked:
Dr. Evan Hirsch
8 years experience Integrative Medicine
Depends: It depends on how deficient you are. Usually 2000mcg/day is recommended. Taking a form that is under the tongue is better absorbed. Balance with a b-c ... Read More
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A 48-year-old member asked:
Dr. Thomas Namey
47 years experience Rheumatology
Depends!: Mdr is 5 mcg/day. I take 2500 mcg/ day, since it lowers homocysteine, which causes atherogenesis!
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A 38-year-old male asked:
Dr. J. Lawrence Dohan
56 years experience Dermatology
Wrong question: Why ask this? There is no toxic dose of B12. You will absorb only a tiny fraction of these very large doses. Why are you taking it? Most of the time ... Read More
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A 30-year-old member asked:
Dr. Thomas Namey
47 years experience Rheumatology
500mcg: I recommend 500mcg, but taking sl B12 2500mcg will also lower a factor in heart disease, called homocysteine.
A 28-year-old female asked:
Dr. Ed Friedlander
43 years experience Pathology
No: It's very safe. If you are taking it as an oral supplement, be sure you are able to absorb it by this route -- many people who are deficient cannot. Y ... Read More
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