It is generally not recommended to take iron and calcium tablets at the same time. Iron and calcium tablets are competitive with each other, which can affect the absorption of both in the body and reduce their effectiveness. It is difficult for the body’s small intestine to work with too many elements at the same time, and what is not absorbed will be excreted, resulting in malabsorption of calcium and iron. Due to individual differences, taking them at the same time may also enhance the stimulation of the stomach and upset stomach, so it is not recommended to take iron and calcium tablets at the same time. Calcium tablets are recommended to be taken after breakfast or dinner for better results. Iron tablets can be taken after lunch, so that separate take can get good nutritional supplementation, to avoid each other affect the effect, resulting in nutrient loss. Normally, you can also eat some food rich in iron and calcium, such as beef, fish, kelp, cherries and so on.