- Foods with calcium PI - Calcium supplements PI - Sources of vitamin D PI - Bone density definitions PI; RELATED TOPICS. Patient education: Absent or irregular periods (Beyond the Basics) Anastrozole official prescribing information for healthcare professionals. Includes: indications, dosage, adverse reactions, pharmacology and more. What should I discuss with my healthcare provider before taking anastrozole (Arimidex)? You should not use this medication if you are allergic to anastrozole, if you are breast-feeding a baby, or if you have not yet completed menopause. Anastrozole is used for chemoprevention of breast cancer, but it is not licensed for this indication. Public Assessment Report Decentralised Procedure ANASTROZOLE 1MG FILM-COATED TABLETS Procedure No: UK/H/1288 and 1436/001/DC UK Licence No: PL 32106/0004-5 General. Anastrozole should not be used in premenopausal women. The menopause should be defined biochemically (luteinizing-hormone [LH], follicle stimulating hormone [FSH], and/or estradiol levels) in any patient where there is doubt about menopausal status. Anastrozole is a non-steroidal aromatase inhibitor used to treat breast cancer in postmenopausal women. Learn about side effects, drug interactions, dosages, warnings, and more. Important Information. Anastrozole may not work as well if you take it together with estrogen medication (such as hormone replacement therapy, estrogen creams, or birth control pills, injections, implants, skin patches, and vaginal rings). Age effect on bone mineral density changes in breast cancer patients receiving anastrozole: results from the ARBI prospective clinical trial Aromatase inhibitors (AIs) are an important component of adjuvant endocrine therapy in postmenopausal women with estrogen receptor (ER)-positive breast cancer.