Side effects can vary based on the ingredients of the injection. ... Lipotropic injections frequency. ... a doctor may prescribe B12 injections every other day for 2 weeks until your symptoms improve.

B12 shots can have mild side effects like diarrhea and swelling at the injection site. Vitamin B12 injections are an effective way to treat a deficiency, but they're not for everyone.

Learn about the side effects of taking too much vitamin B12. ... Common side effects of vitamin B12 injections include mild diarrhea, itching, nausea and vomiting, dizziness, ...

But do vitamin B12 injections work for weight loss? "I can't say it's the miracle drug," said Sara Fausett, a graduate student at the University of Utah's nutrition program, who is about a month ...