Why Choose HINNAO Methyl B12 Methylcobalamin, the most bioavailable and active form of B12. It has been found to possess strong neuro-protective and longevity properties, boosting immunity, mood, memory, and energy… Like most vitamins, your body can’t make B12… So we do it for you. HINNAO Methyl-B12 is 3rd Party Tested Our HINNAO Methyl-B12 is 3rd party tested and proven to enter your bloodstream within seconds.