Research · Meta-analysis
The efficacy of sour tea (Hibiscus sabdariffa) on cardiovascular risk factors: a systematic review and meta-analysis of RCTs
What it found
Lowered systolic BP ~4.7 mmHg and diastolic ~4.1 mmHg vs control.
- Design
- Meta-analysis
- Year
- 2020
- Sample size
- 362
- Population
- adults
- Intervention
- hibiscus tea
- Outcome
- blood pressure
- Journal
- Phytotherapy Research
Citation last checked 2026-06-21.