Do vitamin B12 tablets have side effects?

Vitamin B-12 can cause very rare but serious allergic reactions (anaphylaxis). This includes swelling of the face, tongue, and throat, and difficulty swallowing and breathing. If this occurs after you take vitamin B-12, call 911 or your local emergency services immediately.

What are the benefits and side effects of vitamin B12?

Vitamin B12 benefits include forming red blood cells, preventing dementia, and reducing birth defects. Vitamin B12 is found in foods like meat, eggs, dairy, and fish. Side effects of B12 are rare but can include headaches, anxiety, and nausea.

Is it good to take vitamin B12 tablets?

For most adults, the recommended daily intake (RDI) is 2.4 mcg, though it’s higher for women who are pregnant or breastfeeding ( 1 ). Vitamin B12 may benefit your body in impressive ways, such as by boosting your energy, improving your memory and helping prevent heart disease.

What does B12 pills do for your body?

Vitamin B12 is an essential nutrient that helps the body create DNA, nourishes the brain and nervous system, and assists with the formation of healthy red blood cells. The nutrient occurs naturally in meat, fish, and dairy products, and can be created in a laboratory.

What medications should not be taken with B12?

Anticonvulsants — include phenytoin (Dilantin), phenobarbital, primidone (Mysoline) Chemotherapy medications — particularly methotrexate. Colchicine — used to treat gout. Bile acid sequestrants — used to lower cholesterol; include colestipol (Colestid), cholestyramine (Questran), and colsevelam (Welchol)

How long do B12 side effects last?

In general, the effects of vitamin B12 injections can last about one week; however, it’s important to consult a healthcare provider to determine how you should administer the injections.

Is it safe to take vitamin B12 daily?

When taken at appropriate doses, vitamin B-12 supplements are generally considered safe. While the recommended daily amount of vitamin B-12 for adults is 2.4 micrograms, higher doses have been found to be safe. Your body absorbs only as much as it needs, and any excess passes through your urine.

Does B12 raise blood pressure?

Vitamin B12 intake was significantly inversely associated with systolic blood pressure and diastolic blood pressure (P for trend was <0.001 and 0.006, respectively).

Can vitamin B12 damage your liver?

The common forms of vitamin B include vitamin B1 (thiamine), B2 (riboflavin), B3 (niacin), B6 (pyridoxine) and B12 (cyanocobalamin). Except for niacin (when given in high doses), there is no evidence that the other B vitamins, in physiologic or even super-physiologic high doses cause liver injury or jaundice.

What are the symptoms of high B12 levels?

High doses of vitamin B-12, such as those used to treat a deficiency, might cause:

• Headache.
• Nausea and vomiting.
• Diarrhea.
• Fatigue or weakness.
• Tingling sensation in hands and feet.

How much B12 should an elderly woman take?

Recommended Vitamin B12 Dosage for Seniors A recent study found that for seniors, a daily dose of 500 micrograms was efficient in reversing the signs of B12 deficiency. In general, experts recommend 2.5 micrograms of vitamin B12 per day for people over the age of 14.

Is B12 bad for kidneys?

In April, the Journal of the American Medical Association (JAMA) published a study that looked at whether high doses of B vitamins (folic acid, B12, B6) helped people with kidney disease due to diabetes. The study found that high doses of these vitamins were actually harmful.

What are the pros and cons of vitamin B12?

Vitamin injections are usually a little bit more expensive than oral pills. But with an injection,you get exactly what you pay for since the entire dose is usable.

An injection is an injection. People with a fear of needles or low pain threshold might not enjoy routine pokes.

Vitamin B12 injections require a prescription from a doctor.

What are the negative effects of vitamin B12?

Headache

Dizziness

Rash

Itchy skin

Facial flushing

Skin redness

Cold symptoms

Anxiety

Swelling

Diarrhea

How often should I take B12?

Injections of cyanocobalamin, or vitamin B12, normally get administered daily to start. They are then given every other day for two to three weeks, and then monthly to treat pernicious anemia, according to Drugs.com.

What happens when you overdose on vitamin B12?

Vitamin B12 is a water-soluble vitamin that is bound to protein in ingested food. No toxic or adverse effects associated with a large intake or overdose of vitamin B12 from food sources or supplements in healthy people have been documented. Vitamin B12 can cause severe and sudden optic atrophy, which is a degeneration of the optic nerve.