Iron is the most abundant mineral in the blood. Holland & Barrett's Iron with Vitamins and Minerals also provides calcium, copper and molybdenum, which must be present for iron to function properly. Dietary sources of iron include organ meats such as heart and liver, as well as some dried fruits and molasses. Functions of Iron: Iron contributes to the normal formation of red blood cells and haemoglobin Iron contributes to normal oxygen transport in the body Iron contributes to normal cognitive function Iron contributes to normal energy yielding metabolism Iron contributes to the normal function of the immune system Iron contributes to the reduction of tiredness and fatigue Iron has a role in the process of cell division Iron is the most abundant mineral in the blood. Holland & Barrett's Iron with Vitamins and Minerals also provides calcium, copper and molybdenum, which must be present for iron to function properly. Dietary sources of iron include organ meats such as heart and liver, as well as some dried fruits and molasses. Functions of Iron: Iron contributes to the normal formation of red blood cells and haemoglobin Iron contributes to normal oxygen transport in the body Iron contributes to normal cognitive function Iron contributes to normal energy yielding metabolism Iron contributes to the normal function of the immune system Iron contributes to the reduction of tiredness and fatigue Iron has a role in the process of cell division