Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
increased urination;
painful urination;
blood in your urine; or
swelling, shortness of breath.
Common side effects may include:
painful urination;
nausea, vomiting; or
rash, itching.
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.
 Hiprex side effects (more detail)
