b12 up injection How to self-inject intramuscular vitamin - Overview Cyanocobalamin (B12) Injection 1000 mcg/mL,

This is why all B12 treatments experts advise not to retest B12 levels after treatment has begun as they are not a reliable guide to whether treatment is being effective

These findings have not been demonstrated in people

They are particularly useful for individuals who have difficulty absorbing B12 from food, such as those with certain digestive issues, older adults, vegans, and vegetarians

"Her GP gave her a course of 6 vitamin B12 injections" My understanding of UK guidance on treatment for B12 deficiency is that as neurological symptoms were present eg twitching, memory problems then the treatment should have continued beyond the 6 loading injections