Calcium tablets can be taken during menstruation. Calcium tablets can mainly improve calcium deficiency and osteoporosis. During menstruation, with the outflow of menstrual blood, it is easy to have a lack of trace elements and minerals, so calcium supplementation during menstruation can help to replenish certain trace elements. You can take vitamin D and osteotriol and other active vitamin D to promote the absorption of calcium in the body, especially for middle-aged women, as they grow older it is easy to have osteoporosis, so timely calcium supplementation is necessary. In addition, we should pay attention to participate in more outdoor activities, more sunshine to promote the absorption of calcium, strengthen the body and bone quality, regularly improve the measurement of bone density and trace elements, calcium supplementation should be moderate.