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What Are The Side Effects Of Vitamin B-12?
Oral vitamin B-12 is safe to take at recommended doses for healthy people. If this occurs after you take vitamin B-12, call 911 or your local emergency services immediately. Some agents are linked to reduced absorption or serum levels of vitamin B-12.
You may need vitamin B-12 supplements if you take any of the following: colchicine
metformin
proton pump inhibitors
vitamin C
chloramphenicol
H2 blockers
aminosalicylic acid Folic acid supplements may interfere with vitamin B-12. Be sure to tell your doctor if you take folic acid.
When Should You See A Doctor?
Foods with vitamin B-12 include: eggs
Cheese
Fish
Shellfish
Liver
Kidney
Red Meat
How Are Vitamin B-12 Side Effects Treated?
Avoid taking supplements if possible, and try to get B-12 from food sources.
Side Effects
This medication may cause low potassium levels in the blood (hypokalemia). Seek immediate medical attention if any of these rare but very serious symptoms occur: chest pain (especially with shortness of breath), weakness on one side of the body, sudden vision changes, trouble speaking.
Get medical help right away if you have any very serious side effects, including: symptoms of heart failure (such as shortness of breath, swelling ankles/feet, unusual tiredness, unusual/sudden weight gain). This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US –
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. You may report side effects to Health Canada at 1-866-234-.
What Is Vitamin B-12 ?
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Generic name: cyanocobalamin (injection) (sye AN oh koe BAL a min)
Brand name: Vitamin B12, Vitamin B-12
Drug class: Vitamins
Medically reviewed by Drugs.com on Nov 26, 2021.
What Is Vitamin B-12 ?
Vitamin B-12 is used to treat vitamin B12 deficiency in people with pernicious anemia and other conditions. Vitamin B-12 may also be used for purposes not listed in this medication guide.