Tiny, easy to take high strength sublingual B12 tablets. Dissolvable on the tongue, they provide B12 in its most active and absorbable methylated forms (methylcobalamin and adenosylcobalamin). What makes this supplement Bio-effective?: Two active forms of B12 to ensure bioefficacy in everyone If people are very low B12 they specifically need adenosylcobalamin to activate the mitochondria ?- this is the form for energy production Methylcobalamin is a?universally active form Sublingual form, allowing rapid oral absorption and noticeable results