Arimidex is a drug used for breast cancer treatment in postmenopausal women. At this phase Arimidex considerably lowers the estrogen levels in the body, which can slow the growth of certain types of breast tumors, namely those that feed on estrogen to develop. This medication is often prescribed to female patients whose cancer is progressing even after tamoxifen preparations (Nolvadex, Soltamox) therapy.
Arimidex is also occasionally prescribed to women of child-bearing age with the same diagnosis. In such cases the patient must be warned that Arimidex belongs to FDA pregnancy category D, meaning that it has been shown to cause significant harm to the unborn children. Most likely your healthcare provider will insist on you using at least two forms of birth control and taking regular pregnancy test in the process of the treatment regimen. It is not known whether anastrozole (Arimidex's active chemical agent) passes into breast milk and, if so, whether it can harm a nursing baby. Consult with your doctor regarding the use of this medication if you are now breast-feeding.
When taking Arimidex, it is important to follow your doctor's instructions precisely. Do not alter the dosage in any way on your own free will. Remember that you may need to keep taking Arimidex for years, depending on your state. Store the drug at room temperature, in a dry place protected from heat.