Natural Factors B12 Methylcobalamin 5000 mcg provides vitamin B12 in its most bioactive form. This one-per-day sublingual formula helps form red blood cells, prevent vitamin B12 deficiency, and support healthy metabolism. It also helps in energy metabolism and normal immune system function. Methylcobalamin, an active form of vitamin B12, is readily absorbed and can be used directly by the body, unlike cyanocobalamin, which must be converted for the body’s use.
 
Helps form red blood cells 
Helps in the normal function of the immune system
Helps prevent vitamin B12 deficiency 
Helps maintain the body’s ability to metabolize nutrients
Helps in energy metabolism