Polycystic ovary syndrome is a major endocrinological disorder affecting 5-8% of reproductive aged women. Anovulation is a major feature of the syndrome, managed primarily by clomiphene citrate. Failure to respond to clomiphene citrate is termed clomiphene resistance and second line treatment is either laparoscopic ovarian drilling or gonadotrophin ovulation induction. Although laparoscopic drilling is effective in restoring ovulation and achieving pregnancy, some women still remain anovulatory and infertile after the procedure. N-acetyl cysteine has emerged as a novel therapeutic adjuvant to laparoscopic drilling to improve ovulation and pregnancy rate.