Get emergency medical help if you have signs of an allergic reaction to Zenpep: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
joint pain or swelling; or
symptoms of a rare but serious bowel disorder - severe or unusual stomach pain, vomiting, bloating, diarrhea, constipation.
Tell your doctor if your child is not growing at a normal rate while using Zenpep.
Common Zenpep side effects may include:
stomach pain, gas, upset stomach;
diarrhea, frequent or abnormal bowel movements;
rectal itching;
headache;
runny or stuffy nose, sore throat; or
changes in your blood sugar.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Zenpep side effects (more detail)
