b12 injection or tablet which is better Injections vs Tablets: What You Need to Know Vitamin B12 Injections vs. Supplements:

Lyophilised shelf life: up to 24 months when stored correctly

Common US Prescription Formulations In the US, doctors often prescribe vitamin B12 injections made with cyanocobalamin or hydroxocobalamin

Uses What is Butaphosphan + Vitamin B12 used for

Store the lyophilised solid in a desiccated environment at -20C out of direct light

Although after 4 to 6 injections if they do not feel any benefits then there is a possibility that the B12 is more than likely not going to be effective

If a patient is dealing with a B12 deficiency that is related to their diet, its possible they will not need further treatments, provided they make dietary changes, or they may only need injections annually or biannually