where to administer a b12 injection How Use These 4 IM Spots Safely How to Administer B12 Shots

10.1089/acm.2006.12.881 Summary Keywords vitamin B12, efficacy, bioavailability, therapeutic approaches, meta-analysis, cobalamin Citation Mazur M, Ndokaj A, Salerno C, Vallone J, Ardan R, Bietolini S, Carrouel F, Wilk A, Sarig R, Ottolenghi L and Bourgeois D (2025) Efficacy of sublingual and oral vitamin B12 versus intramuscular administration: insights from a systematic review and meta-analysis

But a huge number of meat eaters are also deficient and likely dont know it B12 is absorbed through the stomach, and our ability to assimilate it through the stomach wall decreases with age, as well as due to any stomach issues like IBS, Crohns, and Celiac Disease, and medications that impact the stomach like metformin, antacids, PPIs, and ibuprofen

Research has shown that in acne patients, the genes that normally help the bacterium to produce B12 are usually inactive

Products that appear vivid blue contain excessive copper and should be avoided

PMID 16163497

Decision Aid Not sure which GLP-1 option is the right fit