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Doctors Lounge - Gynecology Answers
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| erum
- Tue Feb 21, 2006 10:11 am |
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I'm 34 yrs old and am taking Utovlan(Norethisterone %mg tablets) 3 times a day for delaying periods as am on holidays.
I'm a bit confused as Norethisterone at the dose of 350 micrograms (Micronor) works as a contraceptive but does norethisterone (at the dose of 5mg tablets thrice daily) has contraceptive effect or not, or do I need to take some other contraceptive pill?
Thanks for your help
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| R. Zein, Pharm D
- Wed Mar 15, 2006 11:25 am |
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 Dear erum
Norethisterone or Aygestin (norethindrone acetate tablets, 5 mg oral tablets) is a synthetic, orally active progestin.
This medication is a female hormone. It is used to treat amenorrhea (lack of menstrual flow), abnormal bleeding from the uterus, or endometriosis (a painful condition where the lining of the uterus is abnormal). It is also used to prevent pregnancy.
Therefore, the drug it self causes contraception, and should never be used if you suspect pregnancy as it can cause fetal birth defects .
However, very important, while taking Aygestin, be aware if you are taking any of th following medictions : ·rifampin (Rifadin); ·phenytoin (Dilantin); ·carbamazepine (Tegretol); or ·a barbiturate such as amobarbital (Amytal), butabarbital (Butisol), mephobarbital (Mebaral), secobarbital (Seconal), or phenobarbital (Luminal, Solfoton). Smoking and the use of certain antibiotics along with the above listed medications can reduce the effectiveness of norethisterone, increasing the likelihood of pregnancy occurring. Therefore, if you are taking any of the aformentioned medications, you should use another method of contraception.
Thank you very much and have a great day.
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