What happens if you take too many B12 injections?

What happens if you take too many B12 injections?

However, supplementing with excessively high levels of B12 has been linked to some negative side effects. Several studies have shown that megadoses of the vitamin can lead to outbreaks of acne and rosacea, a skin condition that causes redness and pus-filled bumps on the face.

Can vitamin B12 Injections be harmful?

Safety and Side Effects 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.

Can too much B12 poison you?

Very high blood levels of vitamin B12 were tied to an increased risk of early death.

How much B12 injection is safe?

B12 may be injected into a muscle or under the skin at 100 mcg daily for a week, every other day for another week, and then every three or four days for a month. Thereafter, 100 mcg should be injected once a month for life.

Can you OD on B vitamins?

You’re also unlikely to get too much vitamin B if you’re taking any supplementation as directed. That said, overdose is possible — especially if you’re taking a supplement without receiving a deficiency diagnosis from your doctor. Symptoms of a vitamin B complex overdose include: excessive thirst.

How long do B12 injection side effects 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.

How long do side effects from B12 injections last?

Can too much B12 make you feel ill?

B12 supplements are usually safe. For adults, doctors recommend 2.4 micrograms a day. If you take more than what you need, your body passes the rest out through your pee. Still, high doses could have some side effects, like dizziness, headache, anxiety, nausea, and vomiting.

Can vitamin B12 injection make you feel sick?

At first, you may need to have the injection a few times a week to boost your levels of vitamin B12. Some common side effects are feeling or being sick and diarrhoea.