Comparison of letrozole and clomiphene citrate efficacy in terms of ovulation induction and pregnancy rate.

Objective: To compare the efficacy of Letrozole and clomiphene citrate in Patients of Anovulation polycystic ovarian syndrome with Infertility. Study Design: Randomized Controlled Trial Setting: Department of Obstetrics and Gynecology Independent Medical College Faisalabad. Period: 30-09-2019 to 29-6-2020. Material & Methods: This study included 100 patients with 50 patients in each group. Group A received 2.5 to 5mg letrozole in each cycle from day 3 to 7. Group B received clomiphene citrate 50 to 100 mg incremental dose depending on ovarian response. Both Drugs were given for consecutive 3 to 6 cycles to see response. Main outcome Measure included optimal follicle size (> 18mm), endometrial thickness, and pregnancy rate. Epidemiological data and efficacy outcome measures were recorded on a Performa. Statistical analysis was done using SPSS version 13. Chi-square test applied and p-value <o.o5 was considered significant. Both group included primary infertility patients. Results: The mean age of patients was 28.03+ 3.02 years. Mean age of group A patients was 29.04+3.44 and 28.47+3.90 group B patients. Mono ovulation in group A patients (88.9%) and 27 in group b patients (60.0%). The mean endometrial thickness was 9.6mm + 1.6 in letrozole group and 6.9mm + 1.2 in clomiphene citrate group A. In group A 18% got pregnant from Letrozole group and 1.1% from the group B. Conclusion: Efficacy was significantly higher in group A Patients received letrozole as compared to patients echo received clomiphene citrate. The effects of Letrozole showed better outcome in terms of Ovulation Induction Endometrial Thickness and Pregnancy rate.