German Iron Dollar is an iron supplement that is mainly used for all types of people and as an aid in the treatment of iron deficiency anemia due to various causes. Iron is usually taken about half an hour before a meal, and the amount taken varies according to the age of the patient. Generally adults can take 15ml each time and 3 times a day. When taking iron supplements, care should be taken not to take them at the same time as other mineral-based nutrients, as this may affect absorption. Milk, coffee, strong tea, etc. can affect the absorption of iron, and care should be taken not to drink milk, strong tea and coffee within 2 hours before and after taking iron to avoid affecting the effect.