Vitamin B-12 is an essential vitamin, meaning it is required by the human body to function. Vitamin B-12 Plays an important role in our brain function, immune system, skin health, hair health and aging process. It is used in regimens created to aid with high cholesterol, IBS, sleep disorders, inflammation and more. Our B-vitamin drops are a convenient way to supplement daily Vitamin B-12 levels and absorb quickly into the system being that they are in liquid form. Vitamin B-12 is an essential addition to general health and wellness.