in two open randomized studies carried out in female volunteers the effects of a new low dose oral contraceptive ( o.c . ) combination desogestrel + ethinylestradiol ( 150 micrograms/30 micrograms ; marvelon ) on blood coagulation were compared with those of either the combination levonorgestrel + ethinylestradiol ( 150 micrograms/30 micrograms ) or a triphasic preparation containing levonorgestrel + ethinylestradiol .
C1112096
desogestrel
C0015011
ethinylestradiol