A regular supplementation of iron tablets is most essential during pregnancy. However, an expecting mother is strictly advised to follow the dosage of this essential mineral as per the recommendation of the doctor. High levels of iron content in the body system are known to cause disorders in the gastronomical tract. In most of the cases, these disorders manifest in the form of constipation, which is observed as one of the major problems among would-be-moms. However, constipation can be easily cured by increasing the intake of water and various juices. Nausea has been observed to be another common side effect of taking a high dosage of iron. This condition, is sometimes, accompanied by diarrhea as well. According to several experts, one of the most common feelings associated with pregnancy is queasiness. This feeling is also a direct after math of more-than-required percentage of iron in the body. Darkness of the stool is another side effect of the over-dosage of iron supplements. Most of the times, dark stool is counted as an indicator of the efficiency of iron tablets, however, if black colored stools are accompanied by itchiness in the urinary tract, the issue must be brought to the immediate attention of the doctor.