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Doctor insights on: Dangers Of B12

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Dr. Randy Baker
1,006 Doctors shared insights

Vitamin B12 (Definition)

Vitamin B12 is a vitamin which is a kind of nutritional agent ...Read more


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Are high doses of B12 (10000%) dangerous for live? What are a side efects?

Are high doses of B12 (10000%) dangerous for live? What are a side efects?

NO: There is no known toxicity of taking Vitamin B12 even in extremely high doses. See http://lpi. Oregonstate. Edu/mic/vitamins/vitamin-B12#toxicity However, there are some reports that B12 might worsen acne, not due to toxicity but due to how it affects bacteria in our skin- see http://www. Theverge. Com/2015/6/24/8839927/vitamin-b12-acne-pimples-bacteria

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How do I know if I need to take more B12 shots or is it dangerous?

How do I know if I need to take more B12 shots or is it dangerous?

Do you have: pernicious anemia? Only take B12 injections under the direction of a doctor and blood levels are ckecked, A high B12 level can cause problems.

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Is B12 B12 deficiency dangerous if you don't do anything about it?

Is B12 B12 deficiency dangerous if you don't do anything about it?

POSSIBLY: Prolonged B12 deficiency can result in peripheral neuropathy and reduced mental function. If left untreated the damage can become permanent. If pernicious anemia exists, the deficiency can be fatal. Early signs are seen in blood work where MCV and/or MCH values are elevated, which indicate a B12 and/or Folic Acid deficiency. B12 is best given im or sq. Take professional grade b-complex, too.

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Are there any dangers or risks associated with overdosing on vitamin b12?

Are there any dangers or risks associated with overdosing on vitamin b12?

No: It's just foolish. My concern is why a person would do this. If this is a sign of a possible wish for self-injury, the situation is serious and needs to be addressed.

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Can using B12 injections for a long time cause cancer? I like B12 injection which is done by a woman nurse. I'm on it since 4 years. Is it dangerous?

Can using B12 injections for a long time cause cancer? I like B12 injection which is done by a woman nurse. I'm on it since 4 years. Is it dangerous?

NO but why use it???: Indiscriminate use of B12 injections is ill advised. Unless you have a medical reason (? deficiency) I would advise you to stop it before you create a new problem...No injections are entirely safe.

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Is it dangerous to get too much vitamin b12?

Is it dangerous to get too much vitamin b12?

Vit. B12: B vitamins do not stay in your body and if not used by you they are excreted in the urine, therefore excessive amounts of B12 will not hurt you.

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My last blood test results states B12 result is 1957 when the range is 211-911 which is high. Taken B12 supp. For years. Dangerous?

No need for: Supplement. There are no know toxic effects of high B12. However you have sufficient stores of B12 so there is no need to take the supplement for a few years.

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I've had severe vit B12 deficiency but they haven't been able to find any cause for it. Been taking inject every 2nd day for years now. Dangerous?

Too frequent: Injections. Body can store enough B12 to last a person for a year. Are you injecting yourself? You do not need injections more frequently than every 3-6 months. I would recommend seeing your doctor for an evaluation and injection frequency.

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My platelet distribution width is 16.4 is this dangerous and how can I help to correct it my vit B12 is also 671 is there a connection between the two?

My platelet distribution width is 16.4 is this dangerous and how can I help to correct it my vit B12 is also 671 is there a connection between the two?

Stop worrying: Platelet distribution width is of no concern at all if you are otherwise healthy. If this B12 is in picograms/ml then this is likely within the reference range; it's worrisome only if it's low and a high value in someone who's otherwise healthy isn't anything to worry about. Ranges are actually set so that several percent of normal folks fall outside.

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Is 1500 pg/ml blood result for vitamin B12 dangerous?

Is 1500 pg/ml blood result for vitamin B12 dangerous?

No: It probably means that B12 is accumulating and not being used. Folate (folic acid) may be high also. In a case that I reported, symptoms disappeared and B12 and folate (folic acid) dropped to normal levels when the patient received large doses of b1. (lonsdale d. Recurrent febrile lymphadenopathy treated with large doses of vitamin b1: report of two cases. Dev pharmacol ther 1980;1:254-64. Ask your doc: see if he can find.

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Are elevated B12 and folate (folic acid) levels a problem? My most recent blood work showed these both to be high...Any danger?

Are elevated B12 and folate (folic acid) levels a problem? My most recent blood work showed these both to be high...Any danger?

No danger: These are temporary elevations. These vitamins dissolve in water and any extra will be water out in your urine. Provided your kidneys are normally functioning.

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Is a blood level of vitamin B12 of 951pg/ml in a 10 months old child dangerous?

Is a blood level of vitamin B12 of 951pg/ml in a 10 months old child dangerous?

No: That's the serum level of cyanocobalamin. What's more important is looking at the intracellular levels. Having lower values is more dangerous than having higher values. Cyanocobalamin is the B vitamin that helps attach the oxygen molecule to the hemoglobin in red blood cells to deliver oxygen to tissues. So it's very important!

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I have my vitamin B12 in a low level at 150, is it dangerous and what should I do to increase it. And does the lack of this vitamin slow the metabolisme?

I have my vitamin B12 in a low level at 150, is it dangerous and what should I do to increase it. And does the lack of this vitamin slow the metabolisme?

Low Vit B12.: Low vit B12 (vit B12 deficiency) usually at levels below 200, and reportedly at levels below 400 may lead to permanent neurological damage. It is easily treated with once monthly injections or by over the counter supplementation with the subligunal form being preferred. The quality of the lab testing & other factors may lead to falsely low results.

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How many Monster Energy Drinks (caffeine 166 mg) (taurine 2000 mg) (vitamin B12 590%) (vitamin B6 220%) in a 8 hour period is considered dangerous?

How many Monster Energy Drinks (caffeine 166 mg) (taurine 2000 mg) (vitamin B12 590%) (vitamin B6 220%) in a 8 hour period is considered dangerous?

Two would be tops: For the whole day. Up to 400 milligrams (mg) of caffeine a day appears to be safe for most healthy adults. That's roughly the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two "energy shot" drinks. Although caffeine use may be safe for adults, it's not a good idea for children.

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Is lower heart rate, the lowest was 37bpm during sleep, (recorded on holter monitor), any danger? I am 33 male, 183cm 92kg. Have b12 defficiency, D defficiency and chronic sinusitis.

Is lower heart rate, the lowest was 37bpm during sleep, (recorded on holter monitor), any danger? I am 33 male, 183cm 92kg. Have b12 defficiency, D defficiency and chronic sinusitis.

How do you FEEL?: If you're an athlete and not having spells where you pass out, this is fine and you should be proud of it. If you have other evidence of heart pathology, it's your physician's decision whether to have you worked up for some obscure illness. If your B12 and D deficiencies are due to vegetarianism, please begin supplementing; if not, try to find the cause and supplement appropriately.

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Do you recommended taking some vitamins such as CoQ10, Vitamin E, C, B12, K2, D3, and probiotics and laxatives for constipation in Parkinson? Also is sun exposure dangerous in PD in terms of increasing free radicals in body or is it good for Vit D? Thx

Do you recommended taking some vitamins such as CoQ10, Vitamin E, C, B12, K2, D3, and probiotics and laxatives for constipation in Parkinson? Also is sun exposure dangerous in PD in terms of increasing free radicals in body or is it good for Vit D? Thx

All except laxatives: Are fine, though there is not much evidence that vit E is helpful. Except Exercise! That is apparently emerging as one of the most helpful things you can do for PD AND the good news for you is it also helps constipation. You should of course drink LOTS of fluids and eat fruits, veg, and fiber. If you must take a laxative, use a fiber laxative. Good luck!

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Is 244 low in b12?

Absolutely!: Ideal b12 levels are above 1500 in blood. Often times I will recommend that people take shots or very high levels of vitamin b12 10, 000 mcg if they are less than 500. It can make a huge difference in energy, sleep, cognition, memory and any nerve problems you may have. You will also want to figure out why you have low b12. It could be due to an autoimmune condition or too low stomach acid.

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