Infant suppositories may cause rectal irritation or abdominal discomfort, reports WebMD. In rare cases, an infant may also experience a serious allergic reaction to one of the ingredients in the suppository, causing dizziness, swelling of the throat and face, difficulty breathing or rash.
Following the administration of a suppository, an infant may experience rectal bleeding, bloody stools, severe stomach pain or persistent diarrhea, states WebMD. If persistent diarrhea occurs, there is a risk of dehydration. Babies with severe diarrhea have an increased risk of dehydration because they do not have a large fluid reserve, says Parents magazine. Infants also have an increased metabolic rate, making dehydration more likely after a bout of diarrhea.
A parent or guardian should contact a doctor promptly if any signs of dehydration occur, recommends WebMD. Signs of dehydration in infants include pale skin, decreased urination, wrinkled skin, lack of tears and increased thirst.
If a baby has a history of intestinal blockage or rectal bleeding, it is important to consult a doctor before using infant suppositories, cautions WebMD. If the baby has any other abdominal symptoms, such as severe vomiting, tell the doctor immediately. Contact a physician if the baby's constipation persists for more than one week, as persistent constipation may be a sign of a more serious problem.