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Hibiscus

Evidence Score5.6/10

Studies: 28

Meta-analyses: 9

Dosage:

250–450 mg standardized extract OR 1.25–2.5 g dried calyx per serving (as tea)

Best Time:

With meals · with food

Take with food

Form:

Standardized extract capsule (anthocyanins ≥10%)

🩺 Blood Pressure Reduction80%

4–6 weeks

🫀 Inconsistent Lipid Effect60%

6–8 weeks

⚗️ Increased Antioxidant Capacity75%

Acute to 2 weeks

Moderate safety

Contraindications:

Hypotension or concurrent antihypertensive medication (additive BP-lowering risk)
Allergy to Hibiscus or Malvaceae family plants
Iron-deficiency anemia (may inhibit non-heme iron absorption)

Drug Interactions:

Antihypertensive drugs (ACE inhibitors, ARBs, diuretics, calcium channel blockers)
Statins (simvastatin, atorvastatin)
Diclofenac, acetaminophen and NSAIDs

Side Effects:

Gastrointestinal discomfort (nausea, loose stools)HypotensionHeadache

complementary

complementary

complementary

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