[Use of norethindrone .35 mg in disorders of the menstrual cycle].

PIP: Norethindrone was administered continuously in daily doses of .35 mg to 74 women suffering from menstrual disorders for 576 cycles. The cases included 39 women suffering from dysmenorrhea (treated for 296 cycles) and 35 women suffering from premenstrual tension (treated for 280 cycles). The symptoms improved or disappeared in 87.2% of the dysmenorrhea cases, and in 93.9% of the premenstrual tension cases; the percentages by number of cycles studied were 90.3% and 95.0%, respectively. Only 1 case of dysmenorrhea worsened. The findings are regarded as conclusive and demonstrating the usefulness of norethindrone in the treatment of these disorders.^ieng