Often asked: Why Do I Need B12 Injections?

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.

Who needs B12 injections?

The Institute of Medicine recommend that adults over 50 meet their vitamin B-12 needs with fortified foods, B-12 shots, or other supplements, as these man-made forms appear to be more readily absorbed than naturally occurring B-12.

What causes a B12 deficiency?

However, the most common cause of vitamin B-12 deficiency anemia is a lack of a substance called intrinsic factor, which can be caused when your immune system mistakenly attacks the stomach cells that produce this substance. This type of anemia is called pernicious anemia.

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What does a B12 shot do for you?

Vitamin B-12 is also added to some foods and is available as a dietary supplement. Vitamin B-12 injections are commonly prescribed to help prevent or treat pernicious anemia and B-12 deficiency.

How long does it take for B12 supplements to work?

A response usually is seen within 48 to 72 hours, with brisk production of new red blood cells. Once B12 reserves reach normal levels, injections of vitamin B12 will be needed every one to three months to prevent symptoms from returning.

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

How often do you need B12 injections?

If your vitamin B12 deficiency is not caused by a lack of vitamin B12 in your diet, you‘ll usually need to have an injection of hydroxocobalamin every 2 to 3 months for the rest of your life.

Can anyone have B12 injections?

Vitamin B12 injections are generally considered to be very safe. They have no major side effects. However, in very rare cases, some people can experience side effects caused by allergic reactions or sensitivity ( 29, 30 ). If you experience any side effects, speak with your doctor.

How long does a B12 injection 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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What does a B12 deficiency tongue look like?

B12 deficiency will also make the tongue sore and beefy-red in color. Glossitis, by causing swelling of the tongue, may also cause the tongue to appear smooth.

How long does it take to recover from B12 deficiency?

Recovery from vitamin B12 deficiency takes time and you may not experience any improvement during the first few months of treatment. Improvement may be gradual and may continue for up to six to 12 months.

Can low B12 cause weight gain?

People with vitamin B12 deficiency are likely to experience a wide range of symptoms, though weight gain is unlikely one of them. If you’re experiencing unexplained weight gain, consider discussing it with your healthcare provider or a registered dietitian to determine the root cause.

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.

How do you feel after B12 injections?

The injection is given into a muscle (known as an intramuscular injection). You may have some pain, swelling or itching where your injection was given. However this is usually mild and will wear off quite quickly.

What are the side effects of a vitamin B12 shot?

Pain/redness at the injection site, mild diarrhea, itching, or a feeling of swelling all over the body may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

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