Two hundred women at risk of ovarian hyperstimulation syndrome during ICSI cycles will be randomly scheduled into two equal groups. In group A, (Diosmin group), 2 tab / 8 hs Diosmin ( 500mg) will be given at day of HCG injection and for 2 weeks ; while in group B (Cabergoline group), 1 tab/day Cabergoline( 0.5 mg) will be given at day of HCG injection and for eight days.