Introduction: Emergency contraception is the use of a birth control method after coitus has taken place and there fear that it may lead to pregnancy. Historical attempts were more likely be harmful rather than effective. Oral estrogens, progestins, anti-progesterone, partial agonist/antagonists progesterone have all been used with varying degrees efficacy. Currently ...

OBJECTIVE To examine predictors of health care providers perceiving intrauterine devices (IUDs) as unsafe for nulliparous women and of infrequent provision of IUDs to nulliparous women. METHODS We analyzed questionnaire data obtained during December 2009 to March 2010 from 635 office-based providers (physicians) and 1,323 Title X clinic providers (physicians, physician assistants, certified n...

INTRODUCTION Levonorgestrel a synthetic progestagen used for endometriosis, dysmenorrhea and emergency contraception, is quickly and completely absorbed in the digestive tract. levonorgestrel is predominantly metabolised through hepatic routes that utilise the CYP3A system (CYP3A4 and CYP3A5). OBJECTIVE This study aimed to evaluate the association between variant alleles of CYP3A4*1B and CYP3...

The case report describes a relapse of Crohn's disease in a woman soon after the fitting of a levonorgestrel intrauterine system (IUS). Whilst the published evidence on the effects of levonorgestrel IUS in patients with pre-existing inflammatory bowel disease is limited, reports to date suggest that caution should be exercised when considering fitting an IUS in such women, even if there appears...

There is a need for long-acting birth control methods. Copper-bearing intrauterine contraceptive devices do not have systemic side effects and they are appropriate for parous women who have no excess menstrual flow or cramps at baseline and who have low risk for sexually transmitted infections. Levonorgestrel-releasing intrauterine systems release levonorgestrel directly into uterine cavity. Th...

Knowledge and use of emergency contraception world-wide is extremely limited. Recent research has demonstrated that levonorgestrel alone is at least as effective as the Yuzpe regimen and is much better tolerated. Levonorgestrel is likely to become the method of choice in the early 21st century. Mifepristone is highly effective even at doses which are not abortifacient. Efficacy cannot be calcul...

pregnancy prevention raises much concern to many pet owners. female cats usually show undesirable behaviour during oestrus. nowadays, researchers try to explore the reliable and effective ways to prevent oestrus signs in queens. the results of their studies prove that hormone therapy is probably one of the most reliable methods for this purpose. the aim of our study was to compare the effect of...

This study was a non-randomized clinical trial which compared the breast-feeding experience of 250 Argentine women taking levonorgestrel 0.03 mg daily (begun one week after delivery) with that of 250 women using non-hormonal contraceptives. Weight gain of unsupplemented infants, the most important of the several criteria used to assess breast-feeding performance, was similar for the two contrac...

OBJECTIVE To assess the effectiveness of emergency single-dose levonorgestrel contraception in preventing unintended pregnancies among woman who visited the emergency department (ED) due to sexual assault (SA). METHODS We conducted a retrospective chart review in a university hospital in South Korea. Cases from November 10, 2006 to November 9, 2009 were enrolled. Information from the initial ...

BACKGROUND Emergency contraception can prevent unintended pregnancies, but current methods are only effective if used as soon as possible after sexual intercourse and before ovulation. We compared the efficacy and safety of ulipristal acetate with levonorgestrel for emergency contraception. METHODS Women with regular menstrual cycles who presented to a participating family planning clinic req...