How does Chapéu de Couro work to lower blood pressure?

Chapéu de Couro contains flavonoids including quercetin, rutin, and luteolin that exert diuretic and antioxidant effects. These compounds increase urine output, helping eliminate excess sodium and water from the body, which may reduce blood volume and pressure. The herb's anti-inflammatory properties may also support cardiovascular health. Evidence level: C based on preliminary studies and traditional use.

Can I take Chapéu de Couro with blood pressure medications?

Chapéu de Couro may interact with antihypertensive medications. Due to its diuretic and blood pressure-lowering effects, combining it with prescription blood pressure drugs could cause additive effects, potentially leading to hypotension. The herb should also be avoided with potassium-depleting diuretics, as both may increase potassium loss. Consult a healthcare provider before combining this herb with any prescription medications.

What is the recommended dosage for Chapéu de Couro tea?

The traditional adult dosage for Chapéu de Couro leaf tea is 2-3 cups daily. To prepare, steep approximately 1-2 grams of dried leaves in hot water for 10-15 minutes. For tincture preparations, the typical dose is 1-2ml taken three times daily. These recommendations are based on traditional use (Evidence level: C). Start with lower doses to assess individual tolerance.

Is Chapéu de Couro safe during pregnancy?

No, Chapéu de Couro is considered unsafe during pregnancy. The herb's strong diuretic effects may alter fluid and electrolyte balance, potentially affecting fetal development. Traditional use for stimulating menstrual flow suggests possible uterine effects. There is insufficient safety data for breastfeeding, so avoidance is recommended. Pregnant or breastfeeding women should not use this herb without medical supervision.

What conditions is Chapéu de Couro used to treat?

In Brazilian folk medicine, Chapéu de Couro is traditionally used for rheumatic conditions, hypertension, and kidney disorders. The herb is valued for its anti-inflammatory and diuretic properties, making it popular for joint pain, fluid retention, and urinary tract health. While these uses are documented in ethnobotanical literature (Evidence level: C), rigorous clinical trials are needed to confirm efficacy.

What are the side effects of Chapéu de Couro?

Common side effects include increased urination due to diuretic action, which is expected. Some users may experience mild gastrointestinal effects such as stomach discomfort or nausea, particularly on an empty stomach. Prolonged use may lead to electrolyte imbalances, especially potassium deficiency. Discontinue use if experiencing muscle weakness, dizziness, or irregular heartbeat, which may indicate electrolyte disturbances.

Chapéu de Couro (Echinodorus grandiflorus)

Fiche d'information compilée à partir de PubMed

Cette fiche a été compilée à partir de résumés PubMed (NIH) avec l'assistance d'une IA. Chaque affirmation factuelle est citée par un article PubMed réel (voir la liste des sources). Elle n'a pas encore été révisée par un humain — confirmez auprès d'un professionnel de santé avant utilisation.

Compilé à partir de 30 articles PubMed · modèle : gemma4:31b

Résumé

Echinodorus grandiflorus is a native Brazilian plant used traditionally for inflammatory diseases, arthritis, and hypertension, with scientific evidence supporting its anti-inflammatory, antihypertensive, and antioxidant properties [PMID:28322968, PMID:32168547].

Contexte

Echinodorus grandiflorus is a semi-aquatic plant native to Brazil belonging to the Alismataceae family [PMID:32168547].

Usages traditionnels

Used in Brazilian traditional practices and folk medicine to treat inflammatory diseases, arthritis, rheumatism, and hypertension, and as a diuretic [PMID:28322968, PMID:37507905, PMID:17150321].

Composés actifs

Chemical composition includes diterpenoids (such as chapecoderins A-C and echinophyllins C-F), flavonoids (including isoorientin and isovitexin), and metabolites such as trans-aconitic acid, chicoric acid, and phytol [PMID:28322968, PMID:26692456, PMID:10757722, PMID:11087615, PMID:17143402].

Mécanisme d'action

Vasodilatory effects are mediated via the nitric oxide-cGMP pathway and involve M3-muscarinic and B2-bradykininergic receptors [PMID:17150321, PMID:30719059]. Anti-inflammatory effects are associated with the inhibition of TNF-α release and reduction of IL-1β and chemokine ligand 1 levels [PMID:26692456, PMID:34763354, PMID:26824620].

Preuves cliniques

Preuve DHypertension

Hydroalcoholic extracts showed significant anti-hypertensive and vasodilator effects in rat models [PMID:28322968, PMID:18353111]

Preuve DInflammation/Arthritis

cis-Aconitic acid and flavonoid-rich fractions reduced leukocyte accumulation and joint inflammation in murine models of arthritis and gout [PMID:34763354, PMID:26824620]

Preuve DCardiovascular Protection

Ethanol-soluble fractions demonstrated cardioprotective and anti-atherosclerotic effects in rabbits fed high-cholesterol diets [PMID:29929207, PMID:31233372]

Preuve DDiuresis

Extracts exhibited diuretic effects in rat models [PMID:28322968, PMID:26776663]

Sécurité et effets indésirables

While some studies report no toxicity in rats [PMID:28322968], high doses (1,000 mg/kg/day) in pregnant rats caused anemia, leukocytosis, and increased AST and cholesterol [PMID:21139341]. Additionally, aqueous extracts of the related species E. macrophyllus showed genotoxicity and mutagenicity in bacterial assays [PMID:21637431].

Grossesse et allaitement

Treatment with 1,000 mg/kg/day of aqueous extract in pregnant rats resulted in anemia, leukocytosis, and increased AST and cholesterol [PMID:21139341].

Synthèse des preuves

The evidence consists primarily of preclinical studies (animal models and in vitro assays), indicating strong potential for anti-inflammatory and antihypertensive activity, but lacking human clinical trials.

Sources PubMed

1.PMID: 28322968 (2017) — Echinodorus grandiflorus: Ethnobotanical, phytochemical and pharmacological overview of a medicinal plant used in Brazil. · Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association
2.PMID: 32168547 (2020) — Microvascular Effects of Echinodorus grandiflorus on Cardiovascular Disorders. · Planta medica
3.PMID: 37507905 (2023) — Quantitative Chemical Composition, Anti-Oxidant Activity, and Inhibition of TNF Release by THP-1 Cells Induced by Extracts of Echinodorus macrophyllus and Echinodorus grandiflorus. · Antioxidants (Basel, Switzerland)
4.PMID: 21637431 (2010) — Genotoxicity and mutagenicity of Echinodorus macrophyllus (chapéu-de-couro) extracts. · Genetics and molecular biology
5.PMID: 23852813

Chapéu de Couro

Sources et citations

Zatoun

Chrysanthemum Flower

Noni Tahitian

Résumé

Contexte

Usages traditionnels

Composés actifs

Mécanisme d'action

Preuves cliniques

Sécurité et effets indésirables

Grossesse et allaitement

Synthèse des preuves

Sources PubMed

Sources gouvernementales

Chapéu de Couro

Sources et citations

Plantes associées

Zatoun

Chrysanthemum Flower

Noni Tahitian

Résumé

Contexte

Usages traditionnels

Composés actifs

Mécanisme d'action

Preuves cliniques

Sécurité et effets indésirables

Grossesse et allaitement

Synthèse des preuves

Sources PubMed

Sources gouvernementales