Background and Objectives: This study was conducted with the primary objective of evaluating efficacy of Homoeopathy in establishing the menstrual regularity with improvement in either ultrasonological findings or hirsutism/acne. The quality of life was also assessed using polycystic ovary syndrome questionnaire (PCOSQ). Materials and Methods: A single-blind, randomised, placebo-controlled pilot study was conducted from February 2014 to May 2015 at two research centres. The cases fulfilling the eligibility criteria were enrolled (n = 60) and randomised to either the homoeopathic intervention (HI) (n = 30) or identical placebo (P) (n = 30) with uniform lifestyle modification (LSM) for 6 months. Results: The menstrual regularity with improvement in other signs/symptoms was observed in 60% of the cases (n = 18) in HI + LSM group and none (n = 0) in control group (P = 0.001). Statistically significant difference (P = 0.016) was observed in reduction of intermenstrual duration (from 76.1 ± 37.7 to 46.6 ± 38.7 days) in HI + LSM in comparison to placebo + LSM group (from 93.0 ± 65.2 to 93.9 ± 96.2 days). In PCOSQ, also, significant improvement was observed in HI group in domains of weight, fertility, emotions and menstrual problems (P