This medication is given by a health care professional. It is injected slowly into a vein as directed by your doctor, usually once every 3 weeks. Your first infusion will be given over 60 minutes.

The dosage, the speed of your injection, and the length of time you receive pertuzumab is based on your medical condition, other treatments you are taking, and your response to pertuzumab treatment.

Infusion reactions may happen during the infusion of this drug. Tell your doctor right away if you have any symptoms of infusion reactions such as chills, fever, headache, rash, vomiting, or weakness. Your doctor may give you other medications to help with these side effects or may slow down or stop your treatment for some time.

Use this medication regularly to get the most benefit from it. To help you remember, mark your calendar with a reminder.