Women who are pregnant or are planning to get pregnant should not take Afinitor. Doctors don’t know if Afinitor will harm your unborn baby. It’s important that you don’t get pregnant while you’re getting Afinitor; you must use effective birth control while you’re taking it and for 8 more weeks after you stop taking it.
Also, women who are breastfeeding or plan to breastfeed shouldn’t take Afinitor. Together you and your doctor will decide if you should take Afinitor or breastfeed. You shouldn’t do both.
The most common side effects of Afinitor are:
Afinitor also may cause serious side effects, including:
Lung and breathing problems: In some women, Afinitor may cause severe lung and breathing problems that can dramatically compromise their health. Tell your doctor right away if you develop a cough, have trouble breathing or feel short of breath, or have chest pain.
Infections: Afinitor may make some women more likely to develop an infection such as pneumonia or a fungal or viral infection. Afinitor may reactivate hepatitis B in some people who’ve had that disease in the past. Tell your doctor right away if you have a temperature higher than 100.5, chills, or don’t feel well.
Kidney failure: Afinitor may cause kidney failure in some women. Your doctor will order tests to monitor your kidney function before, during, and after you’re taking Afinitor. If you’ve had kidney or liver problems in the past or have been diagnosed with diabetes, it’s important to tell your doctor before you start taking Afinitor.
Because Afinitor is likely to be given with Aromasin, it’s important to know that bone thinning and weakening and a higher-than-average risk of broken bones can be side effects of Aromasin.
Other common side effects of Aromasin are: