Vitamin B12 shots are designed for people who have a deficiency in vitamin B12. According to Dr. Roy Benaroch on, anemia, poor diet, depression, neuropathy and irritability are all causes of a deficiency in v... More »

Vitamin B12 is available for purchase online through in the form of a topical, an injectable, a needle application or as drops. As of August 2015, prices range from roughly $10 for ten shots to about $70 for... More »

The main side effects of a vitamin B12 injection include redness at the injection site, mild diarrhea, itching or a feeling of swelling all over the body, according to MedicineNet. If these side effects persist or get wo... More »

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Common symptoms of vitamin B12 and folic acid deficiency include feeling lightheaded or weak, a loss of appetite, behavioral changes and concentration problems, explains WebMD. Those with a vitamin B12 deficiency can als... More »

Vitamin B12 is essential to the healthy functioning of the nervous system and helps the body make DNA and RNA. It is also important for the development and maintenance of normal red blood cells and the production of neur... More »

Vitamin B12 may effectively treat vitamin B12 deficiency and conditions such as pernicious anemia, memory loss, diabetes and Alzheimer's disease, according to WebMD. It can also potentially treat cyanide poisoning and de... More »

Vitamin B12 is a nutrient that is necessary for keeping the body's nervous system and blood cells healthy. It also helps to produce essential DNA in every cell. It is needed to prevent a type of anemia, called megaloblas... More »