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What is the maximum daily dose of vitamin b12

A 45-year-old female asked:
Dr. Klaus d Lessnau
Pulmonary Critical Care 37 years experience
1000 micro: Equals one milligram this dose works for most people. See doc if any trouble.
Dr. Kelty Baker
Hematology 29 years experience
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
Dr. Pamela Pappas
Psychiatry 43 years experience
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
A 32-year-old member asked:
Dr. Calvin Weisberger
52 years experience
Fish oil: Fish oil and B12 are compatible.
A 56-year-old male asked:
Dr. James Ferguson
Pediatrics 47 years experience
I wouldn't worry about it. B 12 when taken by mouth is only transiently in your system. Any in excess of B 12 not needed/utilized by the body that day... Read More
Dr. Dora Chizea
Anti-Aging Medicine 49 years experience
Most likely, Not- If one is taking B12 at the recommended dosage. If much B 12 is taken by oral route, however, then some skin problems like Acne an... Read More
Dr. Bennett Machanic
Neurology 53 years experience
Almost impossible to take too much oral B-12, as is a water soluble vitamin, and absorption is limited on a daily basis. But even high levels from mo... Read More
A 29-year-old female asked:
Dr. Grace Akoh-Arrey
Pharmacy 17 years experience
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
A 27-year-old female asked:
Dr. Gurmukh Singh
Pathology 50 years experience
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 38-year-old male asked:
Dr. J. Lawrence Dohan
Dermatology 58 years experience
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
A 30-year-old member asked:
Dr. Thomas Namey
Rheumatology 49 years experience
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
Pathology 45 years experience
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
A 45-year-old member asked:
Dr. Andrew Lipton
Holistic Medicine 31 years experience
Vit b12: Yes it is safe, vit b 12 is water soluble and excess will flush out of body.
A 43-year-old member asked:
Dr. Ronald Krauser
A Verified Doctoranswered
Rheumatology 53 years experience
None: You do not need to take any supplemental vitamin B12 if you are on colchicine.
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