Aromatase inhibitors in Ca breast
letrozole is nonsteroidal competitive inhibitor of enzyme aromatase this enzyme conves adrenal androgen to oestrogens it is used an adjuvant endocrine therapy in post menopausal women with hormone sensitive breast carcinoma ref ;(page no;551) 5th edition of SRB&;S Manual of SURGERY
Letrozole
Anastrozole
Exemestane
Tamoxifen
Endocrinology and breast