why vitamin b12 injections versus oral supplemnets gastric surgery Efficacy of different routes of supplementation for the treatment of patients with vitamin B12 deficiency: A systematic review and network meta-analysis Intrinsic Factor: The Stomach Protein
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doi: 10.1016/j.neurol.2011.01.011
Low levels can lead to complications during pregnancy
Elevated homocysteine has been linked with nerve and cardiovascular concerns
Oral vitamin B 12 versus intramuscular vitamin B 12 for vitamin B 12 deficiency 22 Background: Vitamin B 12 deficiency is common, and the incidence increases with age
