Fulvestrant, sold under the brand name Faslodex among others, is a medication used to treat hormone receptor (HR)-positive metastatic breast cancer in postmenopausal women with disease progression as well as HR-positive, HER2-negative advanced breast cancer in combination with palbociclib in women with disease progression after endocrine therapy...Wikipedia

Manufacturer's Website: Not Available                                                                                                              Average retail cost: $2,269/syringe

Elacestrant is indicated for the treatment of postmenopausal women or adult men with estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative, ESR1-mutated advanced or metastatic breast cancer with disease progression following at least one line of endocrine therapy...Wikipedia

Manufacturer's Website: Orserdu                                                                                                              Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.