Fulvestrant is used to treat certain types of breast cancer. Breast cancer cells need the hormone estrogen in order to grow. Fulvestrant works by blocking the effect of estrogen, slowing tumor cell growth.
How to use Fulvestrant 250 Mg/5 Ml Intramuscular Syringe Antiestrogen
Read the Patient Information Leaflet if available from your pharmacist before you start using fulvestrant and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
This medication is given by slow injection into the buttock muscle by a health care professional. It is given as directed by your doctor, usually every 2 weeks for the first 3 doses and then monthly. The dosage is based on your medical condition.
Fulvestrant Side Effects
Pain/swelling/redness at the injection site, nausea/vomiting, loss of appetite, constipation, diarrhea, upset stomach, dizziness, tiredness, headache, hot flashes, or trouble sleeping may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if you have any serious side effects, including: numbness/tingling of arms/legs, back/leg pain, bone/joint pain, mental/mood changes (such as anxiety, depression), shortness of breath, cough that doesn't go away, burning/painful/frequent urination, unusual tiredness, signs of infection (such as sore throat that doesn't go away, fever, chills).
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
Before using this medication, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients (such as benzyl alcohol), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, bleeding problems, low platelet counts (thrombocytopenia).
This drug may make you dizzy. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Tell your doctor if you are pregnant or plan to become pregnant. You should not become pregnant while using fulvestrant. Fulvestrant may harm an unborn baby. A pregnancy test should be done within 7 days of starting this medication. Ask your doctor about reliable forms of birth control while using this medication and for 1 year after stopping treatment. Do not use birth control that contains estrogen. If you become pregnant, talk to your doctor right away about the risks and benefits of this medication.
It is unknown if this drug passes into breast milk. Because of the possible risk to the infant, breast-feeding while using this drug and for 1 year after stopping treatment is not recommended. Consult your doctor before breast-feeding.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
This medication may interfere with certain lab tests (such as estradiol levels), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.
Note: We strongly encourage you to talk with your health care professional about your specific medical condition and treatments. The information contained in this website is meant to be helpful and educational, but is not a substitute for medical advice.
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