Effect of hibiscus sabdariffa on blood pressure in patients with stage 1 hypertension

Abstract

Using different drug regimens has been proved to have effective effects on lowering blood pressure, but the adverse effects of long-term usage such medications is evident. According to recent trend in suing herbal and traditional medicines, researchers have been focused on evaluating the effect of different herbals on managing hypertension. The aim of the present study is the evaluation of the antihypertensive effect one of these herbs, sour tea ( Hibiscus sabdariffa ), on stage one hypertension. Patients with stage one hypertension who were diagnosed by a cardiologist has been included in the present clinical trial after giving informed consent. The patients were divided into two groups. The control and case group received the same lifestyle and dietary advices for controlling blood pressure. The case group received two standard cup of sour tea every morning for 1 month. The blood pressure of both groups was documented at baseline and at the end of the study and the results were analyzed using SPSS software. A total of 46 patients participated in this study and there was no significant difference in terms of age and body mass index between groups. There was a significant reduction in systolic blood pressure in both groups, but the mean reduction in systolic and diastolic blood pressure was significantly higher in the case group ( P = 0.004 and P < 0.001, respectively). Using H. sabdariffa as sour tea two times a day can be effective in managing blood pressure in stage one hypertension along with lifestyle and dietary modification.

A Randomized, Double-Blind, Placebo-Controlled Trial to Determine the Effectiveness of a Polyphenolic Extract (Hibiscus sabdariffa and Lippia citriodora) for Reducing Blood Pressure in Prehypertensive and Type 1 Hypertensive Subjects

“…In addition, research showed that H. sabdariffa has a compound that causes nitric oxide release from the vascular endothelium followed by kidney filtration increase, a mechanism that clears its diuretic effect on the blood pressure [ 36 , 37 ]. Another study reported a significant decrease in the blood pressure of patients treated with HS, reporting differences between both the control group and the experimental group.…”

“…Another study reported a significant decrease in the blood pressure of patients treated with HS, reporting differences between both the control group and the experimental group. However, a limitation of the study was that all subjects were encouraged to lose weight, as well as to control their sodium/potassium intake ratio, which could be partially responsible for the results observed [ 37 ].…”

Antioxidant Food Components for the Prevention and Treatment of Cardiovascular Diseases: Effects, Mechanisms, and Clinical Studies

“…Other natural products also possessed the ability to protect the health of the cardiovascular system, such as cereals, legumes, and herbs [ 121 , 122 ]. For example, drinking 2 cups of Hibiscus sabdariffa in the morning effectively reduced blood pressure in patients with stage 1 hypertension [ 123 ]. Besides, a 3 × 3 completely randomized repeated study showed that daily consumption of 25 g or 45 g soy flour markedly lowered the levels of fasting plasma glucose, fasting insulin, insulin resistance, and DBP in postmenopausal women with prediabetes and prehypertension [ 124 ].…”

Hibiscus sabdariffa, a Treatment for Uncontrolled Hypertension. Pilot Comparative Intervention

“…Different doses have been used in various protocols, Aand the lack of chemical analysis of the doses tested constitutes an additional difficulty when deciding how to use this plant in BP management. When the dosage is as low as 2.5 g of HS decoction daily, no side effects are reported but the pharmacological effect is also minimum with a mean reduction of 7.43 mmHg for SBP and 6.70 mmHg for DBP [18]. This might be sufficient in some cases.…”