Name a common side effect of iron supplements during pregnancy.

Constipation is a well-documented common side effect of iron supplements, especially during pregnancy. Iron supplements are often used to prevent or treat anemia, which can be a concern for pregnant women. However, the form of iron used in supplements can lead to gastrointestinal issues, with constipation being among the most frequently reported.

This occurs because iron can slow bowel motility and alter the gut flora, leading to harder stools and difficulty in passing them. Pregnant women already experience changes in their digestive systems due to hormonal fluctuations, and when combined with iron supplementation, these can exacerbate the issue. Therefore, health care providers often advise those taking iron supplements to increase their fluid intake, consume fiber-rich foods, and engage in physical activity to help mitigate this side effect.