Vitamin B12 (Cobalamin)
Overview
Vitamin B12 supports red blood cells and nerve function.
After Surgery
Absorption can fall after bariatric surgery; monitoring and supplementation remain important.
Supplement Considerations
Cyanocobalamin and methylcobalamin are both used. Evidence does not establish better absorption by supplement form or superiority of sublingual over oral B12. Your team should choose the dose and route.
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