In addition to a prescription for an appetite suppressant a Vitamin B-12 injection may also act as a dietary supplement. When injected, Vitamin B-12 may give you more energy and boost metabolism. When combined with a healthy lifestyle such as eating healthy food in appropriate quantities and exercising regularly, it helps the body use fat and carbohydrates for energy while making new protein.
The dosage of the injections is based on your medical history and response to the initial treatment. The injections may be given daily at the beginning of treatment, and medical conditions may require you to receive injections at a certain rate.