Heart Health
Hibiscus Extract
Also known as: Hibiscus sabdariffa, Roselle
Flower extract with evidence for mild blood pressure reduction. Pleasant tea form available.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Primary uses
- Blood pressure
- Antioxidant
- Diuretic effect
How it works
- ACE inhibitor-like activity
- Diuretic effect
- Antioxidant
Dosage
- Typical range
- 250mg extract or 3 cups tea daily
- Timing
- Any time
- With food
- Optional
- Duration
- 6+ weeks for BP effects
- Special populations
- Mild hypertension, tea lovers
Forms
- Extract capsules
- Tea
- Powder
Safety
Common side effects
- Diuretic effect
- GI upset
Contraindications
- Very low blood pressure
Evidence notes
Evidence for mild BP reduction
Grade B: Some human trials support key claims; further confirmation needed.
Related in Heart Health
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.