Let's take a minute to talk about your medication. 

This is Herceptin. It helps treat cancer cells that have too much of a protein called 'HER-2'. Herceptin targets and blocks HER-2, which may stop cancer cells from growing. 

You will receive this medicine as an infusion into a vein. Sometimes, an infusion reaction can happen during the dose or in the first 24 hours after. Your doctor or nurse will watch you closely during each dose and tell you which symptoms to report. They will be prepared to treat any concerns.

Many people will have side effects. Common side effects include tiredness, trouble sleeping, and a change in the way food tastes. Other side effects are also common, but they can be symptoms of more serious effects. These include a headache, nausea, diarrhea, a fever, chills, cough and rash. It is important to tell your doctor if you have these effects, so he or she can help you manage them. 

Herceptin could lower your ability to fight infections, and it could cause heart or lung problems. Your doctor will explain these in more detail. You should call your doctor right away if you notice the following symptoms: a cough, shortness of breath, swelling in your legs, dizziness or heart palpitations. It is also a good idea to weigh yourself daily. Tell your doctor if you gain more than 5 pounds in 24 hours, or if you are losing weight. To help keep this medicine safe for you, your doctor will follow your condition closely, and will order tests.

Herceptin is not safe for unborn babies. Women must talk to their doctors about which birth control to use and for how long. 

For best results with Herceptin, be sure to discuss any concerns you may have with your health care team.