HB-4 belongs to the category of Haematinic. Adenosylcobalamin in HB-4 is the active form of Vitamin B12 which plays a vital role in the maturation and synthesis of RBC, Carbonyl Iron in HB4, is the purest form of Iron. Folic Acid and Zinc in HB-4, plays a vital role in anemia. Carbonyl Iron in HB-4, is the most pure form of Iron with better absorption and low incidence of side effects.