It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly and to check for unwanted effects. Be sure to keep all appointments.
This medicine may cause heart failure. Your doctor will test your heart before you start receiving pertuzumab. The test will be repeated every few months while you are receiving the medicine. Check with your doctor right away if you have chest pain, trouble breathing, rapid weight gain, or abnormal swelling in your ankles or legs. These could be symptoms of heart failure.
Your unborn baby could be harmed if you use this medicine while you are pregnant. Use an effective form of birth control to keep from getting pregnant during treatment and for 6 months after the last dose of this medicine. Tell your doctor right away if you think you have become pregnant.
This medicine may cause a serious infusion reaction. This can be life-threatening and requires immediate medical attention. Tell your doctor or nurse right away if you have a fever, chills, chest pain, lightheadedness, dizziness, fainting, a headache, a rash, pain, nausea, vomiting, trouble breathing, or weakness within a few hours after the infusion.
Cancer medicines can cause nausea or vomiting in most people, sometimes even after receiving medicines to prevent it. If this happens, ask your doctor or nurse about other ways to control these side effects.