País: Australia
Idioma: inglés
Fuente: Department of Health (Therapeutic Goods Administration)
Letrozole
Aspen Pharma Pty Ltd
Medicine Registered
FERA- Consumer Medicine Information Page 1 of 3 FERA letrozole CONSUMER MEDICINE INFORMATION (CMI) WHAT IS IN THIS LEAFLET This leaflet answers some common questions about FERA. It does not contain all of the available information. It does not take the place of talking to your doctor or pharmacist. All medicines have benefits and risks. Your doctor has weighed the risks of you taking FERA against the benefits they expect it will have for you. IF YOU HAVE ANY CONCERNS ABOUT TAKING THIS MEDICINE, TALK TO YOUR DOCTOR OR PHARMACIST. Keep this leaflet with your medicine. You may need to read it again. WHAT FERA IS USED FOR FERA is used to treat breast cancer in women who are post-menopausal - that is, women who no longer have periods, either naturally due to their age or after surgery or chemotherapy. FERA belongs to a family of medicines called aromatase inhibitors. They are also called "antioestrogens" because they act by reducing the production of oestrogen in your body. Oestrogen stimulates the growth of certain types of breast cancer. These cancers are called "oestrogen-dependent." Reducing the production of oestrogen may help to keep the cancer from growing. This may be the first time you are taking an "antioestrogen" or you may have taken another "antioestrogen" such as tamoxifen in the past. Your doctor may have prescribed FERA for another reason. Ask your doctor if you have any questions about why FERA has been prescribed for you. FERA is available only with a doctor's prescription. BEFORE YOU TAKE FERA WHEN YOU MUST NOT TAKE IT DO NOT TAKE FERA IF YOU ARE ALLERGIC TO MEDICINES CONTAINING LETROZOLE OR ANY OF THE INGREDIENTS LISTED AT THE Leer el documento completo
FERA- Product Information Page 1 of 16 Fera PRODUCT INFORMATION NAME OF THE MEDICINE Letrozole. The chemical name for letrozole is 4,4'-[(1H-1,2,4-triazol-1-yl)-methylene]bis- benzonitrile. Its structural formula is: C 17 H 11 N 5 Molecular weight: 285.3 CAS No.: 112809-51-5 DESCRIPTION Letrozole is a white to yellowish crystalline powder which is practically insoluble in water, freely soluble in dichloromethane and slightly soluble in alcohol. Fera tablets contain 2.5 mg of letrozole. The tablets also contain lactose, sodium starch glycollate, cellulose – microcrystalline, hypromellose, silica – colloidal anhydrous, magnesium stearate and Opadry Yellow 03B52094 (ID No.. 106949). The tablets are gluten free. PHARMACOLOGY The elimination of oestrogen mediated stimulatory effects is a prerequisite for tumour response in cases where the growth of tumour tissue depends on the presence of oestrogens. In postmenopausal women, oestrogens are mainly derived from the action of the aromatase enzyme, which converts adrenal androgens (primarily androstenedione and testosterone) to oestrone (E1) and oestradiol (E2). The suppression of oestrogen biosynthesis in peripheral tissues and the cancer tissue itself can, therefore, be achieved by specifically inhibiting the aromatase enzyme. Letrozole is a nonsteroidal aromatase inhibitor. Data suggest it inhibits the aromatase enzyme by competitively binding to the haem of the cytochrome P450 subunit of the enzyme, resulting in a reduction of oestrogen biosynthesis in all tissues. In healthy postmenopausal women, single doses of letrozole 0.1, 0.5 Leer el documento completo