Medical termination of developing intra-uterine pregnancy.- In sequential use with a prostaglandin analogue up to 63 days of amenorrhea.- Softening and dilatation of the cervix uteri prior to surgical termination of pregnancy during the first trimester.- Preparation for the action of prostaglandin analogues in the termination of pregnancy for medical reasons (beyond the first trimester).- Labour induction in foetal death in utero.In patients where prostaglandin or oxytocin cannot be use.