After the initial period, your treatment will depend upon whether the cause of your vitamin B12 deficiency is related to your diet or whether the deficiency is causing any neuorological concerns, such as issues with thinking, memory and behaviour
It sounds simplejust a shot
the only water-soluble nutrient that has the capability of being stored in the body is vitamin B12, so whatever your body doesnt readily utilise it will store for later use
Patients diagnosed with pernicious anaemia require lifelong treatment, as this is a chronic autoimmune condition
There is no single best route, only the one that fits your goals, your schedule, and how your body responds, which is a conversation to have with your provider rather than a decision to make from a webpage