<prompt> Which of the following is not used in polycystic ovarian syndrome PCOS?OC pillsCyclical progesteronesLetrozoleDanazol  <response>: Management of PCOS Irregular periodsAmenorrhea Rx Combined OC pills Progesterone only pills For 10 days - from 14th day mid cycle Hirsutism Rx Anti Androgens OC pills containing progesterones with anti androgenic action Cosmetic Rx for hair : prevents depression. Infeility Rx Ovulation induction clomiphene, letrozole Weight reduction Insulin sensitizers Metformin Inj Recombinant FSH Inj Gonadotropin 