The Mecobalamin radical contained in Methycobal enhances the synthesis of nucleic acids in the bone marrow, contributes to the maturation and division of erythrocytes, thereby increasing the number of red blood cells. Treatment with Methycobal 500mg brought about rapid recovery of indicators such as: red blood cell count, Hemoglobin and Hematocrit in patients with anemia caused by vitamin B12 deficiency.