The Journal Of Muhammadiyah Medical Laboratory Technologist Vol. 3 No. Mei2020 p-ISSN: 2597-3681 e-ISSN:2614-2805 Pengaruh Ekstrak Mengkudu (Morinda citrifoli. Terhadap Penurunan Tekanan Darah Pada Tikus Putih Wistar Jantan Dengan Hipertensi Pipit Festi Wiliyanarti1. Silaturohmih2 Departement Community of Nursing Faculty of Health Sciences . , . University of Muhammadiyah Surabaya pipitfesti@fik. um-surabaya. ABSTRACT Tanggal Submit: 16 April 2020 Tanggal Review: 4 Mei 2020 Tanggal Publish Online: 5 Juni 2020 Hypertension is one of the most important causes of early death because it is closely related to the risk of cardiovascular The prevalence of hypertension continues to increase with lifestyle changes. Non-pharmacological management is an alternative in the treatment of hypertension, one of which is complementary therapy by consuming herbal ingredients. The purpose of this study was to determine the effect of noni extract on reducing blood pressure in male Wistar experimental-rats. The research design used was pre experimental design. One group pre-test post test design with purposive sampling Number of samples were 16 male Wistar experimental-rats . The instrument in this study was the observation sheet and blood pressure measurement for taicap blod pressure. Statistical test analysis using Wilcoxon test. The results showed blood pressure before being given noni extract, cystolic pressure 150. 93 mmHg, diastole pressure 87 mmHg. After administration of noni extract average blood pressure systole: 110,625 mmHg, diastole blood pressure average 85,125 mmHg Wilcoxon statistical test results showed that p = 0,000