Significance

• The side effects of Cefzil in children are similar to those experienced in adults, except that young children who are still wearing diapers may develop diaper rash while being treated with Cefzil.
  
  

Types of Common Side Effects

• The most common side effects of Cefzil in children include diarrhea, nausea, dizziness, vomiting and stomachache.
  
  

Allergies

• Cefzil is a type of cephalosporin, which is related to penicillin. Approximately 10 percent of children who have an allergy to penicillin will experience a severe, life-threatening reaction to Cefzil, according to RxList.
  
  

Risks

• In some children as well as adults, Cefzil causes colitis, a potentially fatal inflammation of the colon that causes severe diarrhea.
  
  

Considerations

• If your child has a history of blood clotting disorders, low levels of carnitine in the blood, kidney or liver disease, phenylketonuria, Vitamin K deficiency or gastrointestinal disease, it may not be safe for her to take Cefzil due to the potential side effects of the drug, warns the Mayo Clinic.
  
  

Warning

• It is not safe for children under six months of age to take Cefzil for ear and sinus infections or for children under the age of 2 years to take it for infections of the throat.