are b12 tablets as effective as injections vs. Oral Supplements: Which Is Better? Vitamin B12 A Vitamin B12

However, this association does not imply causationelevated B12 often serves as a biomarker for serious underlying disease rather than being directly harmful

While cyanocobalamin has proved effective in preventing vitamin B12 deficiency, there is increasing evidence that the coenzyme B12 forms have a distinct advantage and better spectrum of action in many specialised applications

Other forms such as methylcobalamin are available as food supplements but are not licensed medicines in the UK and have no proven superiority

But it could be helpful to screen people for B12 deficiency in advance and give them B12 supplements to delay or prevent the onset of depression