How often can you have 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.
Is it OK to get a B12 shot every week?
For the majority of people, I recommend once weekly for 4 weeks. Then B12 shots can be helpful monthly as maintenance. If we are treating autoimmunity or pernicious anemia, you will receive B12 weekly or twice weekly for 6-12 weeks.
How long does it take for a B12 shot to wear off?
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.
Are Vitamin B12 Injections Safe?
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.
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
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.
Which is better B12 pills or injections?
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. The choice of shot or pill depends on the reason for the deficiency. Vitamin B12, found in any food from animals, needs to be released from proteins during digestion.
How many times a week can you get a B12 shot?
Some doctors recommend that anyone can use B12 injections, with a frequency of up to one shot weekly for 4 weeks. If you are using for non-medical reasons, you can make your own choices to determine how often to use B12 injections.
Can you take too much B12?
Since B12 is a water-soluble vitamin, it’s generally considered safe, even at high doses. No Tolerable Upper Intake Level (UL) has been established for B12, due to its low level of toxicity. UL refers to the maximum daily dose of a vitamin unlikely to cause adverse side effects in the general population.
What are the side effects of having B12 injections?
B12 shot side effects include, but are not limited to:
- Swelling at the injection site.
- Mild diarrhea.
- Swelling in the body.
- Low potassium.
Do B12 shots help you lose weight?
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. Vitamin B-12 is also added to some foods and is available as a dietary supplement.
What to expect after getting a 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. This medication may cause low potassium levels in the blood (hypokalemia).
Does B12 injections cause weight gain?
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.
Who needs B12 injections?
Who needs B-12 shots?
- People with signs and symptoms of B-12 deficiency. Anyone who is displaying any of the signs and symptoms of a B-12 deficiency or pernicious anemia should consult their doctor immediately.
- B-12 deficiency risk factors.
- People with gastrointestinal issues.
- Older adults.
- Vegetarians and vegans.
What is the cost of B12 injections?
A B12 injection can cost more than some oral supplements; however, you need them less often. For example, B12 injections cost anywhere from $20 to upwards of $100. The cost greatly depends on your insurance coverage and where you are going to have a shot administered.