title: Is oral vitamin B12 as effective as intramuscular injection?
authors.forename: Clarissa
authors.initials: C
authors.lastname: Kripke
mesh_terms: D000284:Administration, Oral; D004305:Dose-Response Relationship, Drug; D006801:Humans; D007273:Injections, Intramuscular; D016032:Randomized Controlled Trials as Topic; D014805:Vitamin B 12 / Q000008:administration & dosage*; D014806:Vitamin B 12 Deficiency / Q000188:drug therapy*; D014803:Vitamin B Complex / Q000008:administration & dosage*
chemical_list: D014803:Vitamin B Complex; D014805:Vitamin B 12