Adding L-carnitine in Clomiphene Resistant Polycystic Ovary Improves the Quality of Ovulation and the Pregnancy Outcome

Inclusion Criteria: * Patients younger than 35 years, presenting with primary or secondary infertility following regular intercourse for at least 1 year and diagnosed with PCO according to Rotterdam's criteria who had received five unsuccessful clomiphene citrate-timed intercourse stimulation cycles were included. The diagnosis was based on a complete history taking, physical examination and a paper documented complete infertility work-up within the previous 6 months, either conducted within the setting of the hospital or at a licensed infertility management clinic. Exclusion Criteria: * age more than 40 years, * tubal,uterine or male factor infertility