how often should i take b12 injections You Get Vitamin Injections? The Timing of B12 Injections:

Single-Dose Injection

Education into practice Practice How often do you evaluate B 12 deficiency related symptoms in individuals at high risk of developing this, such as vegetarians and vegans, or people with increased risk of B 12 malabsorption, such as individuals with type 1 diabetes or Hashimoto hypothyroidism

A study tracking patients on semaglutide for 12 months found mean vitamin B12 levels dropped from 567 to 494 micrograms per deciliter, a significant decline that happened quietly while patients focused on their shrinking waistlines

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