The Aqueous Calyx Extract of Hibiscus sabdariffa Lowers Blood Pressure and Heart Rate via Sympathetic Nervous System Dependent Mechanisms. NJPS [Internet]. 2021 May 20 [cited 2026 Apr. 4];29(2):131-6. Available from: https://ojshostng.com/index.php/njphysiologicalsciences/article/view/1820