Šalis: Australija
kalba: anglų
Šaltinis: Department of Health (Therapeutic Goods Administration)
Norethisterone
MICRONOR ® 1 MICRONOR ® _Norethisterone _ CONSUMER MEDICINE INFORMATION WHAT IS IN THIS LEAFLET This leaflet answers some common questions about MICRONOR tablets. It does not contain all the available information. It does not take the place of talking to your doctor or pharmacist. All medicines have risks and benefits. Your doctor has weighed the risks of you being given MICRONOR against the benefits this medicine is expected to have for you. IF YOU HAVE ANY CONCERNS ABOUT USING MICRONOR ASK YOUR DOCTOR OR PHARMACIST. Keep this leaflet with your medicine. You may need to read it again. WHAT MICRONOR IS USED FOR MICRONOR is used to prevent pregnancy. MICRONOR is a birth control pill (also known as an oral contraceptive). Unlike other oral contraceptives, MICRONOR only contains one type of female hormone, called progesterone. This makes MICRONOR a progesterone only contraceptive pill or 'mini pill'. The active ingredient in MICRONOR is norethisterone which is rapidly absorbed from the gastrointestinal tract. Norethisterone is a synthetic progestogen (hormone) and is known to alter the cervical mucus and lining of the womb. As a result there is a reduced chance of fertilisation (sperm reaching the egg). It also makes it harder for any fertilised egg to become attached to the wall of the womb and therefore less likely for pregnancy to occur. Your doctor may have prescribed MICRONOR for another reason. Ask your doctor if you have any questions about why this medicine has been prescribed for you. Like all oral contraceptives, MICRONOR is intended to prevent pregnancy. It does not protect against HIV infection and other sexually transmitted diseases (see Special Precautions). BEFORE YOU USE MICRON Perskaitykite visą dokumentą
CCDS Aug 2011 1 jcpmicro10613 _ _ MICRONOR ® PRODUCT INFORMATION NAME OF THE MEDICINE norethisterone The structural formula is: CAS No: 68-22-4 DESCRIPTION Progestogen-only oral contraceptive containing norethisterone, a synthetic progestogen. MICRONOR tablet contain 350 micrograms of norethisterone, and the inactive ingredients: lactose anhydrous, magnesium stearate and pregelatinised maize starch. PHARMACOLOGY PHARMACODYNAMICS The primary mechanism through which norethisterone prevents conception is not known, but progestogen-only contraceptives are known to alter the cervical mucus, increasing the difficulty of sperm penetration, exert a progestational effect on the endometrium interfering with implantation, and in some patients, suppress ovulation. PHARMACOKINETICS Limited pharmacokinetic data are available from studies conducted with norethisterone given alone. Therefore, data from studies conducted with combined oral contraceptives containing norethisterone have been included _ABSORPTION_: Norethisterone is rapidly and well absorbed following oral administration. First- pass metabolism results in an average bioavailability of approximately 60% (range 47-73% in various studies) (2-7). Peak serum concentrations are generally observed 1 to 3 hours after administration. CCDS Aug 2011 2 jcpmicro10613 _ _ By 24 hours after drug ingestion, serum levels are near baseline, making efficacy dependent upon rigid adherence to the dosing schedule. There are large variations in serum levels among individual users. Progestin-only administration results in lower steady-state serum progestin levels and a shorter elimination ha Perskaitykite visą dokumentą