AOR Tri B12 Synergy - Three foundational forms of vitamin B12 Methylcobalamin, Hydroxocobalamin, and Adenosylcobalamin in one formula. Vitamin B12 is essential for overall health and vitality and used as a co-factor in the body's enzymatic processes. Each form of vitamin B12, or cobalamin, is vital to different cellular processes and are often interrelated. Cobalamin deficiencies can be caused by poor diet, impaired microbiota, or problems with absorption. At particular risk are the elderly, vegans, smokers or those with pernicious anemia. Even certain genetic factors can impair absorption. AOR Tri B12 Synergy ensures the appropriate dose of active and bioavailable B12 is present, for whatever B12 you may be lacking.