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Doctor insights on: Vitamin B12 Injections Dosage

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Have vitamin B12 deficiency, and was told to start taking daily high dose oral supplements (injections not practical). So many options! what's best?

Have vitamin B12 deficiency, and was told to start taking daily high dose oral supplements (injections not practical). So many options! what's best?

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 /without food.Heavy alcohol intake can decrease the effectiveness of this medication. Talk with you doctor if you are drink alcohol on a regular basis. B12 also available in tablet / nasal forms. B12 found in meat, fish, liver cheeses/milk. Take car. ...Read more

Dr. Randy Baker
1,010 doctors shared insights

Vitamin B12 (Definition)

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


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I'm a lifelong vegan, was told that I should be taking vitamin B12 supplements; i can't get this from anything plant based. But what dosage, please?

I'm a lifelong vegan, was told that I should be taking vitamin B12 supplements; i can't get this from anything plant based. But what dosage, please?

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 http://bit.Ly/1607tg3
; http://www.Naturalnews.Com/027045_vitamin_b12_cyanocobalamin_methylcobalamin.Html
; http://www.Mend.Net/cgh/methylcobalamin.Html. ...Read more

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Nutritionist told me to take vitamin B12 to help me sleep. Will it work? And is 2500mcg sublingual form too large a dosage? Thankyou

Nutritionist told me to take vitamin B12 to help me sleep. Will it work? And is 2500mcg sublingual form too large a dosage? Thankyou

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 sleep, so if you are deficient in B12 then taking it can improve sleep. 2500 mcg is totally safe; only a small fraction of B12 is absorbed no amount of B12 is known to be toxic. See http://bit.Ly/1hlbiaz for more on B12 deficiency. ...Read more

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It has been suggested that I take vitamin B12 because the bottoms of my feet feel numb but they aren't. I do not have diabetes. What dosage?

It has been suggested that I take vitamin B12 because the bottoms of my feet feel numb but they aren't.  I do not have diabetes.  What dosage?

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 to be deficient in vit B12 then you need to be treated either with injectable vitb12 or nasal spray in therapeutic dases followed by maintainance doses, the numbness may due to other causes. ...Read more

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I am looking to take liquid vitamin B12 for lack of energy. What would the recommended dosage be if I am not quite certain I am actually deficient?

I am looking to take liquid vitamin B12 for lack of energy. What would the recommended dosage be if I am not quite certain I am actually deficient?

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 good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex.
Get HPV vaccine, if you are under 27 years of age. ...Read more

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How long does vitamin B12 injection last?

How long does vitamin B12 injection last?

2to3 days: It is a water soluble vitamin and gets excreted by kidney and if not needed in body it is excreted within 2to3 days. ...Read more

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Optional. How can I do vitamin B12 injections?

Optional. How can I do vitamin B12 injections?

Why?: If you think that you are B12 deficient, get it checked out. You don't take injections for fun or to "supply good health". ...Read more

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What are the effects of vitamin B12 injections?

Many: The obvious answer is that B12 injections are a quick way to fix a deficiency. B12 injections can also be used to help calm pain and inflammation, but the dosage of that is different from the dosage for deficiency correction. Some people can develop allergy to the preservative in B12 injections. Itchy bumps at the site of the shot would be a sign. ...Read more

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How long does one injection of vitamin B12 last?

How long does one injection of vitamin B12 last?

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 more

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How long does it take a vitamin B12 injection to take effect?

Take effect?: I'm not sure what you mean by 'take effect.' the only indication for vitamin B12 injection is for people with severe B12 deficiency or those who are unable to absorb B12 from their diet. That applies to very few people. If you're being given B12 injections for 'energy, ' you should be aware that's it's a commonly administered placebo. ...Read more

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I took vitamin b12 1000mcg on may 28th how long does it take for b12 too get out of the body fully so I can take a Lower dose 250mcg.

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 250 will be about the same as 1000. You can take the 250mcg any time.Since this is in many foods and is even produced by intestinal bacteria, a clinical deficiency occurs only in special circumstances. Vegan diet. Long term use of PPI or H2 blocker s ...Read more

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Can u tell me after i get vitamin B12 injection how does it work. Ive had 4.i get another 2 more weekly.then every 3 months. Where does it go.

Can u tell me after i get vitamin B12 injection how does it work. Ive had 4.i get another 2 more weekly.then every 3 months. Where does it go.

Intramuscular: B12 is normally absorbed and metabolized in the stomach and intestine. But some people don't have the proper digestive enzymes to do this, so injections are needed. The B12 is is injected into muscle, absorbed into the blood stream, and stored in the liver (just like consumed B12) until needed for red blood cell formation, DNA synthesis and proper nerve function. Food sources: meat/fish/dairy. ...Read more

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Vitamin B12 went from 120 to 113. I have to have B12 injections. 1inj 3 times per week for 2 weeks then 1inj every 3 months. Is this permanent or not?

Need more : It seems that you are not getting enough vitamin B12 supplementation; otherwise you would see an improvement. You can also follow the MCV which should be decreasing toward the normal range... ...Read more

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Can vitamin B12 injections cause increased appetite?

Can vitamin B12 injections cause increased appetite?

Only psychologically: It has a very powerful placebo effect. It is often STILL used for that in people who don't have any reason to take it. They report increased well being.. and that would include increased appetite ...Read more

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Will vitamin B12 injections help if I feel tired all the time?

Vit.B12: The only reason to take vit. B12 is that you are deficient. Taking this vit. When not deficient will not help you and will not help tiredness. Many causes for tiredness. ...Read more

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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 more

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What test do I need to take to see if I am vitamin B12 deficient as well as what kind of dr administers the injections? Where can I go? Need help!

What test do I need to take to see if I am vitamin B12 deficient as well as what kind of dr administers the injections? Where can I go? Need help!

Simple blood test: Any lab can administer this test. Injections are the least preferred method to get sufficient vitamin b12. Get it from food such as wild salmon, sea kelp, and other sea vegetables. Don't let someone stick you with a needle if you can avoid it. Just a way to make money for some doctors and other health care providers. ...Read more

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Vitamin B12 injection - what size hyperdermic needle should I use?

Vitamin B12 injection - what size hyperdermic needle should I use?

The pharmacy has it: For intramuscular injection the thinnest needle that will not clog is about a 22 guage.
You can also take B12 liquid under the tongue (need to hold it there for 30 seconds) or take little pills that dissolve under the tongue. ...Read more

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What is the best frequency of vitamin B12 injection, if somebody doesn't have any deficiency but prefers to have shot?

If there is no: Measurable need for additional b 12 you are better off not taking it. If you are a vegetarian you need to keep an eye on your b 12 level via a lab test w/your doc. Meat is our primary source of b 12. In general, sublingual b 12 tablets that melt under the tongue is a good way to absorb b 12. Oral b 12 goes through the GI system and most of it is lost. Peace and good health. ...Read more

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I have a vitamin B12 defiency however even after injections i still feel tired and run down..

I have a vitamin B12 defiency however even after injections i still feel tired and run down..

Museum of history: Injections have moved on into the museum of history of medicine.

Check with a knowledge board certified doc about fatigue.

There are many possibilities but usually this can be fixed. ...Read more

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Does vitamin B12 (in injection form) have any odor? I know vitamin b1 has but whether B12 has.

Does vitamin B12 (in injection form) have any odor? I know vitamin b1 has but whether B12 has.

No: B1 and b2 have a strong odor that is not particularly pleasant (and can make your urine have that odor) whereas B12 does not have any odor. ...Read more

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Will vitamin b12 injections cause weight gain..I don't want to gain weight..but i feel better taking them?

Whoa: If you have been prescribed B12 injections or other suitable replacement therapy based on sound evidence (i.e., labs and a real diagnosis), and you refuse to take them, you will pay for it with your health, your mind, and ultimately your life. They actually do not cause weight gain. SIck people feeling better after treatment may eat more. I'm sorry you were given faulty information. Best wishes. ...Read more

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I am 22.My vitamin b12=76.Vitamin d=10.I am taking methylcobalmin 750 mg daily.And vit d tablets too.Do i need to take vit B12 injections too ?

I am 22.My vitamin b12=76.Vitamin d=10.I am taking methylcobalmin 750 mg daily.And vit d tablets too.Do i need to take vit B12 injections too ?

Maybe...: Wow, pretty low levels. I imagine you're taking 750 mcg daily, not mg. Increase to 1000 mcg 2x/day and chew the tablets- see http://bit.Ly/1cbhjvn
some people will be able to get adequate B12 this way while others will need injections, depending on their ability to absorb b12-if levels not higher in a month get shots.
For d, with levels that low try 10, 000 iu of d3/day: see http://bit.Ly/1gnxnk0. ...Read more

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What foods has vitamin b12.If its to big a question what site should I go to look it all up.I have vitamin B12 Deficiency.I'm getting injections?

Injection best way: Vitamin B12 is present in animal proteins, including dairy. However, people deficient in B12 usually have problems absorbing B12, even when their dietary intake is normal. Injection bypasses the intestine and provides a sure way of getting enough B12 in the body. It is an essential vitamin, so stay with injections. ...Read more

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I have just been diagnosed with vitamin B12 Deficiency.I'm now getting injections 1 every week for 5 weeks then 1 every 3 months. Its for life to?

Yes: This is for keeps unless it turns out you have one of the rare causes of reversible malabsorption. Be thankful. In the Bad Old Days, B12 deficiency guaranteed a slow, miserable, suffocating death from anemia, with only the brain damage perhaps making it more bearable. I cannot overemphasize the seriousness of complying with your injections, and how glad I am this was caught early. ...Read more

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Hi im vitamin B12 def.i get injections for it.is it ok for me to take centrum for all my other vitamins the chemist said it was fine. Happy new year?

Hi im vitamin B12 def.i get injections for it.is it ok for me to take centrum for all my other vitamins the chemist said it was fine. Happy new year?

Your chemist is: correct. There is so little B12 (and many of the other ingredients) in Centrum and other over the counter multivitamins, that it won't make a significant difference. Peace and good health. ...Read more

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Im vitamin B12 deficiency.i get injections will have my 5th one tomorrow.then wait 3 months.My reading was 160.What good is 1ml. If your deficiency.

Consult doctor: You B12 reading is lower than desired, It should be above 250. 1.0 mL contains enough B12 to last normal person for three months, but since your level is low before the injection, discuss with your doctor if you should take the injection monthly rather than every three months. ...Read more

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A person is havig lucoderma.So should he take injections twice a weak of vitamin B12 as it is insuffecient in his body? .He is a vegetarian.Male 21 yr

Whoa: Something is wrong here. All vegetarians need to supplement with vitamin B12, but it's best done orally unless you cannot absorb the stuff that way. B12 shots twice a week is overkill; once a month is probably fine. Leukoderma is often vitiligo, or sometimes tinea versicolor or something else; a proper diagnosis needs to be made. And vitiligo can run with pernicious anemia. Needs to be sorted out. ...Read more

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I'm B12 deficiency.getting injections I can't absorb vitamin b12.what else can I do or buy myself to help. Please there must be other things I can do.

Coordinate what you: do w/your doc. You can take sublingual B12 tablets. They melt under the tongue and go into your bloodstream and bypass your gut. Your body will absorb more B12 this way than by swallowing capsules. Peace and good health. ...Read more