[The effect of progesterone uterine therapeutic system on dysmenorrhoea: prostaglandin F2alpha levels in menstrual blood (author's transl)].

The menstrual flow of five dysmenorrhoeic women was collected, four cycles with and two cycles without local intrauterine administration of progesterone (Progestasert). The menstrual flow of three eumenorrhoeic women served as control. Menstrual blood was collected by tampons stored in butyl-alcohol saturated with water.