Calcium tablets can be taken during menstruation without adversely affecting menstruation or the absorption of calcium tablets. The amount of blood loss during menstruation is high, especially for women with heavy menstruation accompanied by prolonged menstruation. Every time you have menstruation, you will lose iron, potassium, calcium, magnesium, and plasma proteins from your blood, and taking calcium tablets during menstruation can replenish your body with enough calcium, which is beneficial to your body. In addition to calcium tablets, many foods also contain a lot of calcium, such as shrimp, tofu, lean meat, dairy products and so on. During menstruation, you should pay attention to the supplementation of nutrients and eat more foods rich in protein and iron, such as animal liver, egg yolk, soybean products, dairy products, etc. to meet the needs of the body, such as animal blood products, which are not only rich in iron, but also contain protein, which can meet the special needs of iron during menstruation. You should also eat more fresh vegetables and fruits during menstruation to meet the body’s need for vitamins and trace elements. Be careful not to eat cold, spicy and stimulating foods, which can easily cause discomfort during menstruation and in severe cases, dysmenorrhea.