Metformin and N-acetyl Cysteine in Polycystic Ovarian Syndrome—A Comparative Study

Objective: To compare the effects of Metformin with N-acetyl cysteine in polycystic ovarian syndrome (PCOS). Methods: A prospective, randomised controlled study was conducted in the Department of Obstetrics and Gynaecology in a Medical College and General Hospital. Total 115 cases of polycystic ovarian syndrome presenting with different complaints were selected for the study. Fifty nine cases were treated with Metformin (Group-M) and other 56 with N-acetyl cysteine (Group-N). Primary outcome measures are improvement in clinical features and biochemical profile, where as secondary outcome measures are improvement in hormonal profile and ultrasonographic findings. Statistical analysis was done by Z test and Chi square test. Results: From each group, 50 patients were ultimately evaluated. There was significant improvement in some of the clinical features like weight gain, acne and hirsutism in group-N (P < 0.05), but there was no significant change in other features like oligomenorrhoea, amenorrhoea and infertility. The biochemical markers of insulin resistance like fasting insulin, fasting glucose/insulin ratio and HOMA-IR were significantly reduced in group-N. Hormone levels like serum LH, FSH, TT and LH/FSH ratio was significantly decreased in group-N, but FT, FT/TT ratio and SHBG were similar in both the groups. Ultrasonographic findings were similar in both the groups. Conclusion: N-acetyl Cysteine had better improvement in clinical, biochemical and hormonal profile than Metformin in PCOS patients. It can be used as a substitute for insulin reducing medications in treatment of PCOS patients, considering its limited adverse effects.