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vitamin b12 dosage for adults

A 45-year-old female asked:
Dr. Klaus d Lessnau
36 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
28 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
42 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 44-year-old male asked:
Dr. Randy Baker
40 years experience Holistic Medicine
1000 mcg methylcob.: A common dosage is 1000 mcg. I advise the methylcobalamin form if you can find it. B12 is usually absorbed better when taken in a sublingual form. See ... Read More
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A 21-year-old male asked:
Dr. Randy Baker
40 years experience Holistic Medicine
It depends, no: When someone has insomnia B12 is not the first treatment that comes to mind, but B12 is needed for our bodies to make melatonin which helps regulate s ... Read More
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A 69-year-old member asked:
Dr. Yash Khanna
57 years experience Family Medicine
B12: You should not take vitamin B12 withut getting evaluated for numbness of your feet.You should have b12, methymelonic acid levels and if you are found ... Read More
A female asked:
Dr. Gurmukh Singh
49 years experience Pathology
Need more info: Unless you are deficient in B12, taking B12 will not make a difference. Body needs about 3-5 micrograms of B12/day. Taking more will not do harm. For ... Read More
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A 37-year-old male asked:
Dr. Randy Baker
40 years experience Holistic Medicine
NO (unless...): B12 and B complex are often combined together and are extremely safe. I've given this combo to many people and the only side effect I've seen is temp ... Read More
A 38-year-old male asked:
Dr. J. Lawrence Dohan
57 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 female asked:
Dr. Arif Patni
27 years experience Family Medicine
Metformin: Chronic metformin use can sometimes decrease vitamin B 12 absorption, suggest discussing w/ your Dr, to consider having your B-12 levels checked, esp ... Read More
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A 32-year-old member asked:
Dr. Calvin Weisberger
51 years experience Cardiology
Fish oil: Fish oil and B12 are compatible.
A 29-year-old female asked:
Dr. Grace Akoh-Arrey
16 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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