Your doctor will first try to identify why you are deficient in iron so that the cause can be treated. You may need to improve your diet so that it includes more iron. Your doctor may refer you to a dietitian for advice on how to do this. Your doctor may prescribe iron supplements e. g. ferrous sulphate tablets. Iron supplements make up for the shortage of iron and will then build up your body's stores of iron to the normal level. You will usually need to take tablets 2-3 times/day for up to 7 months.
Attribution: BUPA