Fulvestrant injection is used alone or in combination with ribociclib to treat a certain type of hormone receptor positive, advanced breast cancer or breast cancer has spread to other parts of the body in women who have experienced menopause and have not previously been treated with an anti-estrogen medication such as tamoxifen. Fulvestrant injection is also used alone or in combination with ribociclib to treat hormone receptor positive, advanced breast cancer or breast cancer that has spread to other parts of the body in women who have experienced menopause and whose breast cancer has worsened after they were treated with an anti-estrogen medication such as tamoxifen. Fulvestrant injection is also used in combination with palbociclib or abemaciclib to treat hormone receptor positive, advanced breast cancer in women whose breast cancer has spread to other parts of the body and has worsened after they were treated with anti-estrogen medication such as tamoxifen.

Fulvestrant injection is used alone or in combination with ribociclib to treat a certain type of hormone receptor positive, advanced breast cancer or breast cancer has spread to other parts of the body in women who have experienced menopause and have not previously been treated with an anti-estrogen medication such as tamoxifen. Fulvestrant injection is also used alone or in combination with ribociclib to treat hormone receptor positive, advanced breast cancer or breast cancer that has spread to other parts of the body in women who have experienced menopause and whose breast cancer has worsened after they were treated with an anti-estrogen medication such as tamoxifen. Fulvestrant injection is also used in combination with palbociclib or abemaciclib to treat hormone receptor positive, advanced breast cancer in women whose breast cancer has spread to other parts of the body and has worsened after they were treated with anti-estrogen medication such as tamoxifen.