The Effect of Hibiscus Sabdariffa L. Tea on Blood Pressure

Tufts University

Status and phase: Completed; Phase 2; Phase 1

Conditions: Hypertension

Treatments: Behavioral: herbal therapy/botanical therapy (Hibiscus sabdariffa)

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT00175110

PV3727

Details and patient eligibility

About

The goal of this study is to find out whether the plant compounds present in Hibiscus sabdariffa, a plant commonly used in herbal tea blends and other beverages, will have a beneficial effect on blood pressure in people with mildly elevated blood pressure.

Enrollment: 66 patients

Sex: All

Ages: 30 to 70 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Systolic blood pressure 120-150 mm Hg
• Diastolic blood pressure 95 mm Hg or less
• Body mass index (BMI) 18.5-34.9 kg/m2

Exclusion criteria

• Smoking
• Use of medications that influence blood pressure
• Cardiovascular disease
• Chronic kidney disease
• Diabetes
• Regular use of vitamin C supplements (min 500 mg/day) within prior 30 days
• Regular strenuous aerobic activity greater than 30 min/day
• Excessive intake of caffeine or alcohol
• Pregnancy within last 6 months or during study period
• Abnormal complete blood count (CBC), urinalysis or electrocardiogram (EKG)

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind