Q:

Are vitamin B12 injections for weight loss effective?

A:

Quick Answer

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 energy and metabolism levels and therefore help people burn calories faster.

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Full Answer

Doctors treat people with pernicious anemia and vitamin B-12 deficiency with vitamin B-12 shots, but the shot are unlikely to boost energy levels in people without these conditions, says Mayo Clinic. Receiving large amounts of the vitamin in the form of injections is not likely to do any harm, though it can interfere with some medications, making it important for patients to tell their doctors if they receive the shots.

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