Background: Adolescent girls often have limited knowledge regarding dysmenorrhea management, partly due to the lack of engaging and comprehensible health education. Aims:  To determine the effect of animated video-based health education on the knowledge of dysmenorrhea management among female adolescents aged 13–15 years at SMPN 10 Tasikmalaya. Method: A quasi-experimental study with a one-group pretest-posttest design was conducted. A total of 55 seventh-grade female students were selected using simple random sampling. The intervention involved a 5–10minute animated educational video covering the definition, causes, symptoms, and management of dysmenorrhea. Data were collected using a 25-item validated and reliable knowledge questionnaire (Cronbach’s Alpha = 0.826) administered before and after the intervention. Results: The average knowledge score increased from 42.11 (pretest) to 86.55 (posttest). Statistical analysis using the Wilcoxon signed-rank test showed a significant difference in knowledge levels before and after the intervention (p = 0.000). Conclusion: Animated video-based health education is effective in improving adolescent girls' knowledge of dysmenorrhea management. It is recommended that animated videos be considered as an alternative medium for delivering reproductive health education in school settings.
                        
                        
                        
                        
                            
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