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Unlike other forms of b12 like cyanocobalamin which is a synthesized product, methylcobalamin is a naturally occurring form found in animal-based foods
High overhead costs, excessive markups, bundled services, and market pricing all contribute
Although we performed multivariate adjustments, residual confounding may persist due to unmeasured factors such as dietary habits (e.g., irregular intake of animal-derived foods or B12-fortified products), unrecorded use of nutritional supplements, and genetic predispositionsparticularly MTHFR polymorphisms, which are known to influence homocysteine metabolism and folate cycling, thereby potentially altering the functional demand for vitamin B12
Photograph each new vial upon receipt to establish a baseline appearance for comparison
There are two forms of B12 used in injections: methylcobalamin and cyanocobalamin
