['infertility']
['letrozole', 'clomiphene citrate plus n acetyl cystine']

        Inclusion Criteria:

          -  All primary and secondary. Infertility due to anovulation

        Exclusion Criteria:

          -  Male factor infertility, tubal factor.

          -  Endocrineopathy

          -  Hypothyrodism

          -  Morbid obesity

          -  Under weight

          -  Patient with previous surgery including drilling of ovary, Clomiphene Citrate
             resistant to ovulation.
      