Doctor insights on:
Vitamin B12 And Ovulation
Vitamin B12 overdose: Too much vitamin B12 can cause mild diarrhea, skin rashes, hives, breathing problems, heart palpitations, panic attacks, and insomnia. The symptoms typically disappear within a few hours, as the excess B12 is flushed from the system, so no specific treatment is required. ...Read more
Virtually nontoxic: At any dose. I do not believe that you will find very much written on the toxic effects of B12 although I have had a couple of patients who took something on the order of 10x what I had prescribed them was already in the 10,000IU range so they were taking about 100,000IU daily for several weeks and the patient developed diarrhea. When he stopped that resident, within several days diarrhea stopped ...Read moreSee 2 more doctor answers
Possible causes: You could have a low b-12 if you are vegetarian, have been for several years and don't take supplemental b-12. It could be low if you don't make intrinsic factor. This is made in the stomach and is needed to absorb b-12. Lack of intrinsic factor is usually an autoimmune disorder. You could have low b-12 due to taking proton pump inhibitors for a long time as stomach acid is needed as well. ...Read moreSee 1 more doctor answer
Yes, however...: You don't say which medication but it is safe to take B12 with all medications, but it should not be taken at the same time as tetracycline (take at least an hour apart). Many medications reduce absorption & thus increase our need for B12. I advise sublingual or chewable methylcobalamin. See http://umm.edu/health/medical/altmed/supplement/vitamin-b12-cobalamin & http://bit.ly/1cBhjvn. ...Read moreSee 1 more doctor answer
What is the max daily dose of vitamin B12 an adult female with very low levels can take? If her face is flushed is she taking too much?
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 the first place. 1, 000 micrograms of intramuscular cobalamin can be given once/day for 10 days, then once/week for four weeks, followed by once/month for life. Sublingual b12, 500-1000mcg/day. The form of B12 (cobalamin) may be important; see comment. ...Read moreSee 2 more doctor answers
Absolutely: B12 in the form of methyl cobalamin is necessary for numerous biochemical pathways. It can prevent psychoses, nerve tissue degeneration and megaloblastic anemia. Methyl B12 can be given safely at doses up to 3mg intramuscularly and can be given weekly in those patients who cannot absorb it through the GI tract. Otherwise, 2mg oraly is optimal. There are no known side-effects of having to much. ...Read moreSee 1 more doctor answer
Animal yes plants no: Vitamin b12, or cobalamin, is in fish, meat, poultry, eggs and milk products. Generally speaking, you won't find vitamin B12 in plant foods. Some nutritional yeast products contain vitamin b12. Follow this link, http://www.Healthaliciousness.Com/articles/foods-high-in-vitamin-b12.Php for more specific info. ...Read more
Why do you need it?: Why are you getting injections? Did a doctor test for deficiency? Are you vegan? If not, why are you deficient? Don't get B12 injections or take pills (less expensive) unless you are vegan or have a known deficiency. B12 is in fish, chicken and meat. Eat fish like wild salmon for a healthy source of b12. ...Read moreSee 1 more doctor answer
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