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Updated: Sep 16, 2026

In Vitro Imaging and Quantification of the Drug Targeting Efficiency of Fluorescently Labeled GnRH Analogues
Published on: March 21, 2017
Evaluation of d-norgestrel 1.0 mg as a post-coital contraceptive
Abstract:
Two hundred and ninety-eight women were followed for 2578 months (2739 'bleeding intervals') of treatment with d-Norgestrel 1.0 mg given as a post-coital oral contraceptive. Fourteen pregnancies were recorded (general failure rate, 6.5 per 100 woman/years); at least 6 of these patients did not miss any tablet (corrected failure rate, 2.8). The acceptability rates (life table method) were 0.58 and 0.40 after 6 and 12 months of follow-up. The most important medical reason for drop-out was cycle irregularities. The cycle pattern is deeply disturbed by this method of oral contraception.
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