B12 deficiency may result in neurological issues, anemia, poor bone density, and age-related macular degeneration of the eye
None of these contain methylcobalamin
Vitamin B12 is primarily found in: Meats Seafood Dairy products Nutritional yeast Cobalamin is also found in products fortified with vitamin B12, such as breakfast cereals
If neurological symptoms are present, treatment may involve 1mg injections on alternate days until no further improvement is seen, followed by maintenance therapy
However, some people cannot take vitamin B12 injections safely, including those with Lebers disease or similar eye concerns, kidney disease, liver disease, iron or folic acid deficiency, an active infection, or those taking medications that may interact with vitamin B12
Delivery matters for some people Intramuscular injections deliver B12 directly into muscle, bypassing absorption problems