Pharmacology All are true regarding selective estrogen receptor down–regulator (SERD), Fulvestrant except: A Used for treatment of advanced breast cancer B Is a selective estrogen antagonist C Is slower and short acting and less safer than SERMs D Administered as once a month i.m. dose 💡 Explanation All are true regarding selective estrogen receptor down–regulator (SERD), Fulvestrant except: ✓ Correct Answer: C. Is slower and short acting and less safer than SERMs