Vitamin B12

Injections of vitamin B12 are usually given daily or every other day for a couple of weeks, followed by once-a-month shots. You may need to get vitamin B12 shots if you are deficient in vitamin B12, especially if you have a condition such as... Full Answer

Before taking vitamin B12 (cobalamin), check with your doctor to make sure you need this supplement and to find out what dose would be best for you. You should also tell your doctor about any medications, prescription or nonprescription, that you... Full Answer

Vitamin B12 typically doesn't cause any side effects. But in some people, vitamin B12 can cause diarrhea, itching, blood clots, serious allergic reactions or other problems. Vitamin B12 pills or injections are prescribed to treat pernicious... Full Answer

Getting enough vitamin B12 is important to overall health, including oral health, but doctors aren't sure exactly how this vitamin may affect your teeth and gums. The role of vitamin B12 in diabetes also remains to be completely investigated. A... Full Answer

You would need to get vitamin B12 shots from your doctor if you have a severe B12 deficiency. A number of things can cause this, including a poor diet, an inability to make a compound needed for your body to use B12 (a condition called pernicious... Full Answer

There are several ways people can develop a vitamin B12 deficiency. Many people simply don't eat enough foods rich in vitamin B12, including meat, poultry, shellfish, eggs and dairy products. Some people may consume a diet rich in vitamin B12 but... Full Answer

Because it is not quite clear if B12 causes harm to a developing fetus, pregnant women should take B12 with extreme caution. People with the conditions hemochromatosis or hemosiderosis should not take B12 because of the possibility of iron... Full Answer

There are no known drug and food interactions with B12. However, this information is always changing and you should always tell your doctor about any medications you are taking, both prescription and over-the-counter. You should also tell your... Full Answer

You should not use this medication if you are allergic to cobalt or if you have Leber's disease. Vitamin B12 can lead to optic nerve damage (and possibly blindness) in people with Leber's disease. If you have any of these other conditions, you... Full Answer

Megaloblastic anemia due to vitamin B12 deficiencyVitamin B12 deficiency is a cause of megaloblastic anemia, in which red blood cells are larger than normal and the ratio of nucleus size to cell cytoplasm is increased. There are other potential causes of... Full Answer