Gastrointestinal Symptoms: Common side effects include nausea, vomiting, diarrhea, and abdominal discomfort
Reduced secretion of gastric acid and pepsin, from the use of H 2 blocker or proton-pump inhibitor (PPI) drugs, can reduce the absorption of protein-bound (dietary) vitamin B 12 , although not of supplemental vitamin B 12
[49] B 12 is required by enzymes for two reactions: the conversion of methylmalonyl-CoA to succinyl-CoA, and the conversion of homocysteine to methionine
Common syringe sizes for B12 injections are 1ml to 3ml
Always use methylcobalamin, not cyanocobalamin, as methylcobalamin is pre-activated and immediately available for your body to use, especially important if you have MTHFR genetic variations or methylation issues
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