Fulvestrant is used to treat hormone receptor positive breast cancer (breast cancer that depends on hormones such as estrogen to grow) in women who have experienced menopause (change of life; end of monthly menstrual periods) and whose breast cancer has worsened after they were treated with antiestrogen medications such as tamoxifen (Nolvadex). Fulvestrant is in a class of medications called estrogen receptor antagonists. It works by blocking the action of estrogen on cancer cells. This can slow or stop the growth of some breast tumors that need estrogen to grow.
Fulvestrant comes as a solution (liquid) to be injected into a muscle in the buttocks. Fulvestrant is administered by a doctor or nurse in a medical office. It is usually given once a month. You may receive your entire dose of medication as a single injection, or the dose may be divided into two injections that are given one after another.
Ask your doctor or pharmacist for a copy of the manufacturer's information for the patient.
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
Unless your doctor tells you otherwise, continue your normal diet.
If you miss an appointment to receive a dose of fulvestrant, call your doctor as soon as possible.
loss of appetite
pain in bones, joints, or back
pain, redness, or swelling in the place where your medication was injected
swelling of the hands, feet, ankles, or lower legs
difficulty falling asleep or staying asleep
feelings of numbness, tingling, pricking, or burning on the skin
shortness of breath
difficulty breathing or swallowing
swelling of the face, throat, tongue, lips, or eyes
Fulvestrant may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Keep all appointments with your doctor.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Last Reviewed - 09/01/2010
AHFS® Consumer Medication Information. © Copyright, 2015. The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.