Iron supplementation dosage is a vital issue to discuss because deficiency in iron may have problems like anemia and fatigue, also, over dosage of iron supplementation is dangerous for health. Firstly, it is vital to know how iron deficiency takes place. When the oral consumption of iron rich foods is less or when the loss of iron from the body is more than this may cause iron deficiency. Sometimes improper absorption of iron in the body is also responsible for iron deficiency. If you want to start iron supplementation, then you must consult the doctor first, taking into consideration many dangers and side effects associated with iron supplements to some people or iron overdose in some people.  However, here is some information that you must check to understand what dosage of iron supplement will be required. The iron supplement or preparation must have 30-100 mg of elemental iron. And you may take such preparation 2-3 times as recommended by the doctor 1 hour before the meals. And this can provide you 150-200 mg of elemental iron per day which is enough.  Preparations having ferrous gluconate are also a popular supplementation used in iron deficiency. Even ascorbic acid supplementation is helpful. However, each preparation differs in dosage and effect. It is therefore vital to consult the doctor so that he recommends the appropriate dosage of iron supplements.