How do you know when you need a Vitamin B12 shot?

Answer 1

Vitamin B12 is used as a supplement when there is a deficiency of vitamin B12 in the body, usually due to intestinal disease. The shots are given into the muscle on a weekly or biweekly basis (depending upon the physician's orders).

Answer 2

The only way to check if you need a vitamin B12 shot is to have a blood test.

Answer 3

Cobalamin supplements are available in both oral and injectable formulations. A nasal gel is also made.