administering vitamin b12 shots b12 injection sites Best Site: How to Give a B12

Lipo-B injections can be administered up to one to three times a week

But it can take anywhere from hours to a day to see B12 blood levels rise after injection, Foxx says

Neelakantan H, Vance V, Wetzel MD, Wang HY, McHardy SF, Finnerty CC, Hommel JD, Watowich SJ. Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high-fat diet-induced obesity in mice. Biochem Pharmacol. 2018 Jul;154:161-171. doi: 10.1016/j.bcp.2018.05.003. Epub 2018 May 5. PMID: 29738706; PMCID: PMC6015571

Even if you don't have a functional doctor, these are things that you could probably incorporate to get started