Therapeutic herb
Hibiscus
Modest BP reduction in mild hypertension across multiple trials.
Active compounds
- anthocyanins
Recommended daily intake
1–2 cups tea daily
Best cooking method
Steep dried flowers in hot water; chill for iced tea
Flavor profile
Tart, cranberry-like, floral
Conditions this herb supports
Pairs with these cuisines
Safety + contraindications
May lower blood pressure — caution with hypertension meds.
This information is educational, not medical advice. Consult a qualified clinician before therapeutic-dose use, especially during pregnancy, lactation, or when on prescription medication.
Scientific research
Peer-reviewed studies cited from NIH PubMed. Click any PMID to read the abstract.
- RCT2010
Hibiscus sabdariffa L. tea (tisane) lowers blood pressure in prehypertensive and mildly hypertensive adults
McKay DL, Chen CY, Saltzman E, Blumberg JB
3 cups hibiscus tea daily for 6 weeks reduced systolic BP by 7.2 mmHg in pre-hypertensive adults.
PubMed PMID: 19774008 - review2013
Hibiscus sabdariffa L. in the treatment of hypertension and hyperlipidemia: a comprehensive review of animal and human studies
Hopkins AL, Lamm MG, Funk JL, Ritenbaugh C
Comprehensive review confirms BP-lowering effect with no significant adverse events.
PubMed PMID: 25997760
Studies summarized for plain-English understanding. Read the full abstract on PubMed for methodology, sample size, and limitations.