Readers ask: What Is Vitamin B12 Shot Used For?

When should you take B12 injections?

The usual dose for pernicious anemia-associated vitamin B12 deficiency is 100 mcg given as an injection into the muscle or under the skin once daily for 6-7 days. Then the dose may be given every other day for 7 doses followed by every 3-4 days for around 3 weeks. Then, 100 mcg should be injected every month for life.

How long after B12 shot feel better?

People who cannot absorb B12 need regular injections. When injections first are administered, a patient with severe symptoms may receive five to seven during the first week to restore the body’s reserves of this nutrient. A response usually is seen within 48 to 72 hours, with brisk production of new red blood cells.

How long does a B12 shot last?

How long will the effects of a B12 shot last? The effects of our shots vary between individuals. Most people feel the effects for about one week.

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Why would a doctor prescribe vitamin B12?

Vitamin B12 is a nutrient that helps keep the body’s nerve and blood cells healthy and helps make DNA, the genetic material in all cells. Vitamin B12 also helps prevent a type of anemia called megaloblastic anemia that makes people tired and weak. Two steps are required for the body to absorb vitamin B12 from food.

What to expect after getting a B12 shot?

A few mild side effects are associated with the B12 shots, including pain or redness at the injection site, mild diarrhea, itching, or swelling. While these symptoms are usually nothing to worry about, you are advised to contact your health care professional if they persist or worsen.

What medications should not be taken with B12?

Certain medications can decrease the absorption of vitamin B12, including: colchicine, metformin, extended-release potassium products, antibiotics (such as gentamicin, neomycin, tobramycin), anti-seizure medications (such as phenobarbital, phenytoin, primidone), medications to treat heartburn (such as H2 blockers

Where is the best place to give a B12 injection?

The easiest site when self-administering an IM injection is the middle third of the vastus lateralis muscle of the thigh. Other options include the deltoid muscle of the upper arm and the dorsogluteal site on the bottom.

Do B12 shots work for weight loss?

Answer From Brent A. Bauer, M.D. There’s no solid evidence that vitamin B-12 injections aid weight loss. Vitamin B-12 is a water-soluble B complex vitamin found naturally in a variety of foods, including meat, fish and dairy products.

Does B12 help you lose weight?

If you want to lose excess weight, vitamin B12 has been linked to weight loss and energy enhancing. Vitamin B12 plays a major role in the body’s essential functions, including DNA synthesis. Vitamin B12 also helps the body convert fats and proteins into energy.

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How much weight can you lose with B12 injections?

“There’s no solid evidence that vitamin B12 injections aid weight loss. … Some weightloss clinics offer vitamin B12 injections as part of their weightloss programs. Proponents of vitamin B12 injections say the shots give you more energy and boost your metabolism, helping you shed unwanted pounds.

Does B12 keep you awake at night?

B12 greatly impacts your sleep, too, as studies have linked low levels of the vitamin with insomnia. It also turns out your sleep-wake cycles are regulated by the vitamin.

What happens when your vitamin B12 is low?

Not having enough B12 can lead to anemia, which means your body does not have enough red blood cells to do the job. This can make you feel weak and tired. Vitamin B12 deficiency can cause damage to your nerves and can affect memory and thinking.

Can you take B12 shots at home?

The injections are relatively easy and painless to administer, and you can do it all from the comfort of your own home. Once you‘ve conferred with your doctor, and they have written you a prescription, it is important to choose a high-quality B12 supplement to treat your deficiency.

Do you need prescription for B12 shot?

A B12 shot contains high levels of cyanocobalamin, which quickly elevates B12 levels in the body. Injections are water-soluble, which helps your body store and use the vitamin as it’s needed. Shots can be self-administered or given by a doctor. You need a prescription for injections.

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Does B12 give you energy?

Vitamin B12 is involved in energy production in your body. Taking a supplement may improve your energy level, but only if you‘re deficient in this vitamin.

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