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Intramuscular injections bypass the gastrointestinal tract, delivering B12 directly into the bloodstream and producing faster results than oral preparations
Food Sources of Vitamin B12 meats fish shellfish poultry milk and milk products eggs cereal (fortified) nutritional yeast (fortified) Vitamin B12 is found only in animal protein foods and fortified foods
There is no advantage to using the light-sensitive forms of cobalamin, such as methyl B12, instead of the stable cyanoforms, which are readily converted in the body into the type you need, where you need it
The injections may support adherence to lifestyle changes by improving energy, but they are not a primary weight-loss mechanism
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