Serious Reactions That Require Medical Attention Whilst most reactions to B12 injections are mild, certain symptoms indicate potentially serious complications requiring prompt medical assessment
Once injected, B12 enters the bloodstream directly without requiring stomach acid, intrinsic factor (a protein necessary for B12 absorption), or healthy intestinal function
Foods high in B12 include fish, meat, poultry, eggs, dairy produce, and foods that are fortified with B12 (like some breakfast cereals.) If you follow a restrictive diet or have a condition that impacts absorption, you could be at risk for a B12 deficiency
The products are sourced from various countries as well as those listed above
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