Natural Factors BONUS Vitamin B12 Methylcobalamin 1000 mcg 210 tabs
B12 is a water-soluble B vitamin. Deficiencies of B12 may not be seen for several years because the body can store up to 5 years worth of this vitamin. There are several forms of B12 including cyanocobalamin and methylcobalamin. B12 is required in areas where there is high cell turnover, for example the gastrointestinal tract, bone marrow and nervous system. Thus B12 has been used for the treatment of neurological diseases like multiple sclerosis and depression. B12 regulates blood cell production, with folic acid. Lack of B12 leads to types of anemia where the red blood cells look too large, macrocytic, under the microscope. Supplementing sublingually with B12 reverses this type of anemia. B12 is required for digestion, fertility and the normal growth and development of all cells. It enhances learning and memory, and normalizes sleep patterns.
B12 is depleted by sedatives, estrogen, oral contraceptives and alcohol. Anti-gout medication, anti-coagulants and potassium supplements block the absorption of B12. Vegetarians that do not consume eggs or dairy products require B12 supplementation. Diets high in protein require more B12 intake.