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Doctor insights on: Dangers Of B12

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Dr. Randy Baker
1,013 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 ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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?

How high?: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, it would have helped to have the actual values of the results. In general high values for folate and B12 are not a problem. ...Read more

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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! ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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! ...Read more

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Is 244 low in b12?

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. ...Read more

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Do B12 shots help?

Do B12 shots help?

Depends: What are you hoping will improve? A lot of people notice improved energy after getting a b12, that's true, but the only people who really need them are those with a deficiency of B12 that cannot be overcome with pills. Sometimes B12 deficiencies can cause nerve problems and other nervous system disease, so B12 shots can help with those. ...Read more

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Is 239 low for b12?

Yes, but...: "low values for B12 may not be what they appear to be. With that value, get "methyl malonic acid" and "homocysteine" checked. These are more sensitive tests. If both (especially methyl malonic acid) are abnormal, then it is truly low vitamin b12. Treatable, various ways. ...Read more

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Is 2500 mcg B12 too much?

Is 2500 mcg B12 too much?

B12: If taken daily, it is a very high dose. B12 is typically nontoxic but can have side effects at high doses. If taken once a month, then the dose is fine ...Read more

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What causes high vit b12?

What causes high vit b12?

Depends: Chronic myelogeneous leukemia, promyelocytic leukemia, polycythemia vera and also the hypereosinophilic syndrome can result in elevated levels of B12 mostly from increased production of haptocorrin.
In addition, because the liver stores b12, liver diseases such as acute hepatitis, cirrhosis, hepatocellular carcinoma and metastatic liver disease can also cause a rise in serum b12. ...Read more

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What depletes B12 in body?

B12 deficiency: You are at higher risk of B12 deficiency if you: are the age over 45
are a vegan or vegetarian; suffer from digestive problems; take certain diabetes drugs; take acid-blocking medications;
are or have ever been anemic;have low stomach acid;drink alcoholic beverages
B12 deficiency can be due to low B12 intake (rare) or inability to absorb B12 from foods (common). ...Read more

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Is 5000mcg of B12 too much?

No: B12 is safe and has no known toxic dose. 5000 mcg may be more than you need, but it will not harm you. ...Read more

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Can high B12 be a bad thing?

Can high B12 be a bad thing?

Needs evaluation: B12 is not toxic so high B12 due to taking it is not bad. If someone has high B12 without taking it then it can be a sign of serious problems including liver ; kidney disease, myelproliferative disorders including leukemia ; polycythemia vera ; hypereosinophilic syndrome. High B12 does not cause these but caused by them. Further tests are needed to find the underlying cause: http://bit. Ly/1hvpcy7. ...Read more

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B12 500 mcg every day, safe?

Yes: If you are able to absorb this, this will protect you from B12 deficiency. Excess B12 isn't toxic. This is a good idea if you're a vegetarian. ...Read more

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Where can you get B12 shots?

Where can you get B12 shots?

Doctors Office: You can only get B12 Shots by your doctor in doctor's office ...Read more

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