Background: Heavy menstrual bleeding (HMB) is defined as prolonged (>7 days) or excessive menstrual blood loss greater than or equal to 80 ml per menstrual cycle. The objective of the study was to assess the efficacy, acceptability and side effects of LUS IUS in women with heavy menstrual bleeding.Methods: 42 women with heavy menstrual bleeding with or without associated dysmenorrhoea or chronic pelvic pain and had no contraindication to IUS insertion were included in the study. Patients having active genital tract infection, suspicion of pregnancy, uterine fibroids >2.5 cm in size or sub mucosal distorting the uterine cavity, uterine size >12 weeks, atypical endometrial hyperplasia or malignancy, abnormal cervical cytology, coagulopathy or liver disease were excluded from the study. Preliminary endometrial biopsy was done to rule out malignancy and LNG IUS was inserted under anaesthesia. Women were followed for 3,6,12 and 24 months post insertion.Results: In first 3 months, 20% patients achieved normal menstrual cycle, and at 6 months 44.44% had scanty menstrual flow and after 1 year of use 81.5% achieved amenorrhoea. In initial 3 months 37.5% patients had irregular heavy bleeding, which reduced to 13.89% at 6 months and 0% at 1 year follow up. Irregular spotting was second most complaint in 32.5% patients in initial 3 months that persisted in 7.4% patients at 1year follow up. In 5.0% patients, there was spontaneous expulsion of the device in first 3 menstrual cycles. After 3 months of use 57.5% patients were satisfied with the device and at the end of 1 year 92.5% were satisfied.Conclusions: LNG IUS is highly effective in controlling blood loss, well tolerated and better alternative for hysterectomy with higher user satisfaction in all age group of women.