 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  Consult your pharmacist or local waste disposal company.The uses of Fulvestrant Intramuscular: 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.The side effects of Fulvestrant Intramuscular: 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 this medication </s>