As of June 2015, there is insufficient evidence that vitamin B-12 injections help with weight loss, says Mayo Clinic. Some believe the shots can give recipients a boost in energy and metabolism, allowing the body to burn... More »

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Vitamin B12 shots need to be injected intramuscular, which means deep in the muscle tissue. The upper arm muscle, buttocks muscle and thigh muscle are some of the places in a human body where B12 can be injected. 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 »

There is no substantial evidence that vitamin B-12 injections help with weight loss as of June 2015, according to Mayo Clinic. Doctors typically prescribe injections of vitamin B-12, which occurs naturally in meat, fish,... More »

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Despite claims to the contrary, there is no clear evidence that injections of vitamin B-12 can assist with weight loss, according to Mayo Clinic. Some weight-loss clinics offer the injections, claiming they can raise ene... More »

www.reference.com Health Medications & Vitamins Vitamins & Supplements

There is no evidence that vitamin B-12 shots are beneficial for weight loss, as stated by Mayo Clinic. Despite the lack of any scientific studies indicating that vitamin B-12 supports weight loss, some weight loss clinic... More »

www.reference.com Health Medications & Vitamins Vitamins & Supplements

B-12 shots are given to prevent or correct a deficiency of vitamin B-12, reports Mayo Clinic. These shots are also given to people with a condition called pernicious anemia. Pernicious anemia is a decrease in red blood c... More »

www.reference.com Health Medications & Vitamins