injectable b12 for humans 10 Benefits of Vitamin Shots and Costs Vitamin B-12 5000 mcg Injection
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(3) When the researchers running the study measured the release of fatty acids and glycerol from radiolabeled triglycerides, they observed about a 4050% increase compared to the starting levels

Please do check with your individual insurance company though as they all have their own prerequisites now

And lets not forget the added bonus of more energy and improved overall well-being

10.1182/blood-2016-09-740787 [DOI] [PMC free article] [PubMed] [Google Scholar] 99.Manna A, Aulakh S, Jani P, Ahmed S, Akhtar S, Coignet M, et al