Background: Electroconvulsive therapy (ECT) is a widely used treatment modality for mental disorders such as major depression, bipolar affective disorder (BPAD) and catatonia. However, it is considered as one of the most controversial and misunderstood procedures, especially among caregivers. Methods: An experimental pre-test, post-test design was adopted. Forty caregivers of persons with schizophrenia ( n = 12), depression ( n = 13), BPAD with mania ( n = 8), and BPAD with depression ( n = 7) were selected using convenience sampling. The caregiver’s knowledge and attitude toward ECT were assessed before and after the intervention with a single session video-assisted teaching on ECT. The data collection tool used to assess the caregiver’s knowledge and attitude was based on a pre-validated questionnaire. Results: The pre-test evaluation demonstrated poor knowledge among 12 (30%) and a moderate level of knowledge on the remaining 28 (70%) of the study subjects. The attitude scores revealed a neutral attitude among 47.5% and a conservative attitude among 10% of the subjects toward ECT. There was a significant improvement in both mean (±SD) knowledge (13.4 ± 4.7 vs 25.6 ± 2.9) and attitude (10.7 ± 3.5 vs 14.6 ± 3.9) scores following intervention with video-assisted teaching. Conclusion: A single session involving video-assisted teaching improves the knowledge and attitude toward ECT among caregivers by removing the myths and misconceptions about ECT.