The levonorgestrel-releasing IUD is often used to treat excessive menstrual bleeding in women with normal blood clotting. Its usefulness for women with genetic conditions that impair coagulation has been investigated at the Royal Free Hospital in London by Dr. C. E. C. Kingman and colleagues.
The doctors placed the levonorgestrel-releasing intrauterine system in 16 women with inherited bleeding disorders, all of whom had heavy periods that had not improved with previous medical treatment.