Molecular formula :C₃₂H₄₇F₅O₃S

Fulvestrant is a white powder with a molecular weight of 606.77. The solution for injection is a clear, colorless to yellow, viscous liquid. 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.

Dosage :

Each injection contains as inactive ingredients: 10% w/v Alcohol, USP, 10% w/v Benzyl Alcohol, NF, and 15% w/v Benzyl Benzoate, USP, as co-solvents, and made up to 100% w/v with Castor Oil, USP as a co-solvent and release rate modifier.

Fulvestrant may cause side effects.

• vomiting
• constipation
• diarrhea
• stomach pain
• loss of appetite
• sore throat
• weakness
• flushing
• headache
• 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
• dizziness
• difficulty falling asleep or staying asleep
• depression
• nervousness
• feelings of numbness, tingling, pricking, or burning on the skin
• sweating