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evidence · mechanism · dose
Supplements/Herb

Hibiscus Tea

Anthocyanin-rich tea with ACE-inhibitor-like blood pressure effects.

Blood PressureAntioxidantsCardiovascular Health (alias)

Overview

Anthocyanin-rich tea with ACE-inhibitor-like blood pressure effects.

Natural sources
    Common forms

      Mechanism of action

      Anthocyanins inhibit ACE and act as diuretic.

      Pathways

        Effects on the body

        Organ system effects

        Evidence-based benefits

        Lowers SBP ~7 mmHg in mild HTN

        Moderate evidence

        Potential side effects

        Common
          Rare
            Serious

              Drug interactions

              No notable interactions reported.

              Safety & non-supplemental interactions

              Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.

              Avoid if you are
              • ·Pregnant or breastfeeding (insufficient safety data)
              • ·Children under 18 (unless directed by a clinician)

              Supplement interactions

              Pairs well with

              None listed.

              Avoid combining with

              No specific avoidances listed.

              Dosing & bioavailability

              Typical dose
              2–3 cups/d or 250 mg extract
              With food?
              Optional

              Where to buy

              Affiliate-style search links to reputable retailers. We don't endorse specific brands — verify third-party testing (USP, NSF, Informed Sport) before purchase.

              Herb
              Hibiscus Tea
              Amazon
              Wide selection · fast shipping
              Herb
              Hibiscus Tea
              iHerb
              Global delivery · curated brands
              Herb
              Hibiscus Tea
              Thorne
              Practitioner-grade · NSF tested

              Scientific evidence (8)

              RCTJ Nutr · 2010

              Hibiscus sabdariffa and blood pressure

              McKay DL, et al.

              6-week RCT of hibiscus tea in pre/mildly hypertensive adults.

              Key findings

              Reduced systolic BP by 7 mmHg vs placebo.

              Open study
              Systematic reviewPubMed (NLM) · 1970

              PubMed: Hibiscus Tea — Lowers SBP ~7 mmHg in mild HTN

              Live PubMed search

              Live results for "Hibiscus Tea Lowers SBP ~7 mmHg in mild HTN" across the PubMed/MEDLINE peer-reviewed index.

              Key findings

              Opens current human and preclinical literature matching Hibiscus Tea and "Lowers SBP ~7 mmHg in mild HTN". Filter by RCT, meta-analysis, or year on the results page.

              Open study
              Systematic reviewPubMed (NLM) · 1970

              PubMed: Hibiscus Tea — randomized controlled trial

              Live PubMed search

              Live results for "Hibiscus Tea randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

              Key findings

              Opens current human and preclinical literature matching Hibiscus Tea and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

              Open study
              Systematic reviewPubMed (NLM) · 1970

              PubMed: Hibiscus Tea — meta-analysis

              Live PubMed search

              Live results for "Hibiscus Tea meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

              Key findings

              Opens current human and preclinical literature matching Hibiscus Tea and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

              Open study
              Systematic reviewPubMed (NLM) · 1970

              PubMed: Hibiscus Tea — pharmacokinetics

              Live PubMed search

              Live results for "Hibiscus Tea pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

              Key findings

              Opens current human and preclinical literature matching Hibiscus Tea and "pharmacokinetics". Filter by RCT, meta-analysis, or year on the results page.

              Open study
              Systematic reviewPubMed (NLM) · 1970

              PubMed: Hibiscus Tea — safety adverse events

              Live PubMed search

              Live results for "Hibiscus Tea safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

              Key findings

              Opens current human and preclinical literature matching Hibiscus Tea and "safety adverse events". Filter by RCT, meta-analysis, or year on the results page.

              Open study
              Systematic reviewPubMed (NLM) · 1970

              PubMed: Hibiscus Tea — dose response

              Live PubMed search

              Live results for "Hibiscus Tea dose response" across the PubMed/MEDLINE peer-reviewed index.

              Key findings

              Opens current human and preclinical literature matching Hibiscus Tea and "dose response". Filter by RCT, meta-analysis, or year on the results page.

              Open study
              Systematic reviewGoogle Scholar · 1970

              Google Scholar: Hibiscus Tea — clinical evidence

              Live Scholar search

              Cross-database citation index for Hibiscus Tea as it relates to "clinical evidence".

              Key findings

              Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.

              Open study
              Educational use only. This profile is not medical advice. Consult a qualified healthcare professional before starting any supplement, especially if you take prescription medication or have a chronic condition.