What is Arimidex?
Arimidex lowers estrogen levels in postmenopausal women, which may slow the growth of certain types of breast tumors that need estrogen to grow in the body.
Arimidex is used to treat breast cancer in postmenopausal women. It is often given to women whose cancer has progressed even after taking tamoxifen (Nolvadex, Soltamox).
Arimidex may also be used for other purposes not listed in this medication guide.
Before taking Arimidex
You should not use Arimidex if you are allergic to anastrozole, or if you are pregnant or breast-feeding.
If you have any of these other conditions, you may need a dose adjustment or special tests to safely use Arimidex:
- heart disease;
- circulation problems;
- a history of stroke or blood clot;
- severe liver disease; or
- not yet completed menopause.
FDA pregnancy category D. This medication can cause harm to an unborn baby. Do not use Arimidex without telling your doctor if you are pregnant. It could harm the unborn baby. Use effective birth control, and tell your doctor if you become pregnant during treatment.
You may need to take a pregnancy test before using Arimidex, to make sure you are not pregnant. It is not known whether anastrozole passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
How should I take Arimidex?
Take Arimidex exactly as prescribed by your doctor. Do not take it in larger amounts or for longer than recommended. Follow the directions on your prescription label.
Arimidex is usually taken once per day. You may need to keep taking this medication for up to 5 years. Follow your doctor's instructions.
Store this medicine at room temperature away from moisture and heat.
What happens if I miss a dose?
Take the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention if you think you have used too much of this medicine.
The symptoms of an Arimidex overdose are not known.
What should I avoid while taking Arimidex?
Arimidex can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.