Are B12 injections harmful?

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 ).

What are the side effects of having B12 injections?

Vitamin B-12 side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Vitamin B-12 may cause serious side effects.

Are B12 injections healthy?

People who are deficient in vitamin B12 are often prescribed B12 shots. This method is a very effective way of reversing or preventing a deficiency because it allows for 100% absorption directly into the tissues. These days, vitamin B12 shots have even become popular in people without the vitamin deficiency.

Are there negative side effects to B12?

High doses of vitamin B-12, such as those used to treat a deficiency, might cause: Headache. Nausea and vomiting. Diarrhea.

Can B12 injections cause heart problems?

B12 injections may contribute to low potassium levels in your body. Though rare, this reaction can cause muscle cramping, extreme fatigue, and an irregular heartbeat.

Are Vitamin B12 Injections Worth Your Money?

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 ...

Is the NHS stopping B12 injections?

Nationally, all NHS organisations will be stopping B12 injections. Some will offer oral on a script, other areas have stopped and asked patients to purchase it.

What are the symptoms of low B12?

How long does a B12 injection last?

Generally, the results of vitamin B12 injections can last about one week, but it is vital to have this administered by a healthcare provider. Also, the healthcare provider will determine the appropriate B12 dosage, depending on the current medical condition and diet.

How often can you have a B12 injection?

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.

Do B12 shots make you gain weight?

Despite the numerous processes in which vitamin B12 is involved, there's little evidence to suggest that it has any influence on weight gain or loss.

How do you feel after B12 injections?

Most patients are ready to resume their day after receiving a B12 injection. Your specific results may differ slightly from someone else's. Often, patients feel an improvement to their energy levels, focus, attention-span, endurance, and improved sleep.

How long does it take for a B12 shot to kick in?

Since B12 shots are injected intramuscularly bypassing the digestive process, they start to work immediately. Typically, our patients experience positive effects between 24-72 hours after the treatment.

What is the most common cause of B12 deficiency?

Pernicious anaemia is the most common cause of vitamin B12 deficiency in the UK. Pernicious anaemia is an autoimmune condition that affects your stomach. An autoimmune condition means your immune system, the body's natural defence system that protects against illness and infection, attacks your body's healthy cells.

Is B12 deficiency serious?

If left untreated, the symptoms of vitamin B12 deficiency tend to worsen and irreversible problems involving the nerves and brain may develop. The risk of experiencing a number of serious complications, including heart failure, may also increase.

What happens if I don't have my B12 injection?

If you miss having your injection, the level of vitamin B12 in your body will go down further. This may make your health problems worse. If you do have to miss an appointment, ask your doctor or nurse when you should have the next dose.

Can B12 injections cause nerve damage?

Before taking this medicine. You should not use this medicine if you are allergic to Vitamin B12 or cobalt, or if you have Leber's disease (an inherited form of vision loss). This medicine can lead to optic nerve damage (and possibly blindness) in people with Leber's disease.

How long it will take to recover from B12 deficiency?

Once you begin treating your vitamin B12 deficiency, it can take up to six to 12 months to fully recover. It is also common to not experience any improvement during the first few months of treatment. If you can, it's a good idea to address what's causing the deficiency.

What conditions require B12 injections?

Certain conditions like Crohn's disease, celiac, Graves', certain cancers, pernicious anemia, certain infections, and lupus also illicit B12 supplementation. Certain prescription medications such as antacids and some drugs for type 2 diabetes can increase the risk for a B12 inadequacy in the body.

Does B12 cause dementia?

Vitamin B12 has not been proven to cause Alzheimer's or dementia, but studies have shown that increasing B12 intake in women can slow cognitive decline.

Does vitamin B12 help with Covid?

For vitamin B12, early computer modelling and laboratory-based research indicate that vitamin B12 may bind to at least one of the viral proteins and thereby slow down viral replication. Neurological features of COVID-19 and vitamin B12 deficiency overlap.

Can you take multivitamins with B12 injections?

Yes, we do suggest that you regularly take a reputable multivitamin whilst having your B12 injections. Vitamin B12 is one of several vitamins that has a pivotal role in the body, so it's important that through diet and supplementation we help our bodies to become rich in all of these vitamins.

Is B12 injection better than tablets?

Which is better—the B12 pill or the shot? A. Low B12 can cause anemia and fatigue. For many people with low B12 levels, a daily supplement in the form of a pill is as effective as taking a monthly muscle injection.

Can anxiety cause low B12?

The sad fact is that most western primary care providers treat the labs, not the person in front of them. This is changing, slowly, but it's the sad norm. This often means that B12 deficiencies go untreated, even in folks with long standing depression and anxiety, often for years.

Can B12 injections cause blood clots?

Population research suggests that having low levels of vitamin B12 might be linked to an increased risk for blood clots in the veins. But research evaluating the use of vitamin B12 to prevent blood clots in the veins is unclear.