Performance of a vitamin supplement is dependent upon two distinct factors: absorption and bioavailability. Liposomal Methyl B provides the best of both by providing activated forms of B-vitamin in a nano-technology liposomal delivery system. Though there are many B-vitamin products on the market, most use synthetic or inactive forms of vitamins B6, B12, and folate. These products must then be converted by the body via a series of reactions so they can actually be utilized. Liposomal Methyl B was developed to give the body a boost, not create extra work, which is why we only included the co-factor forms of these essential B vitamins. Available in 26 mL and 50 mL sizes.