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A B12 injection may be worth discussing if: You have absorption problems: Conditions like Crohn's disease, celiac disease, or atrophic gastritis can reduce how well your body absorbs B12 from food, and past gastric surgery can have a similar effect
A patient with Pernicious Anemia cannot do this
The largest oral trial already showed that a longer study did not guarantee a better result
The 2025 meta-analysis by Alfalasi and colleagues, published via PMC, synthesized data from 16 studies and 6,098 total participants
B12 in Beef Liver: Content, Benefits and Safe Consumption Beef liver stands out as one of the most concentrated dietary sources of vitamin B12, providing approximately 6080 micrograms per 100-gram servingfar exceeding daily requirements