Herbe de balai (Cytisus scoparius): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does broom herb work on the heart?

Broom herb contains sparteine, a cardiac alkaloid that affects the heart's electrical conduction system. Sparteine exhibits antiarrhythmic properties by influencing sodium channels in cardiac cells, which can help regulate abnormal heart rhythms. The herb also contains scoparin, which contributes to its diuretic effects. However, the therapeutic window between effective and toxic doses is extremely narrow, making its mechanism potentially dangerous without professional medical supervision. Evidence level: C/Traditional.

What medications interact with broom herb?

Broom herb has significant drug interactions and should not be combined with monoamine oxidase inhibitors (MAOIs) due to risk of hypertensive crisis. Because sparteine affects cardiac rhythm, combining it with antiarrhythmics, beta-blockers, digoxin, or blood pressure medications can cause dangerous additive effects. The herb may also interact with diuretics and other heart medications. Always consult a qualified healthcare provider before using broom herb alongside any prescription medications. Evidence level: C/Traditional.

What is the safe dosage of broom herb?

Broom herb should only be taken in very small doses under medical supervision. Traditional adult dosages range from 0.5-1ml of tincture (1:5 strength in 45% alcohol). Larger doses can cause serious toxicity including cardiac arrhythmias and hypertension. Due to the presence of sparteine and its narrow therapeutic index, self-medication is strongly discouraged. Professional guidance is essential for determining appropriate dosage based on individual health status. Evidence level: Traditional.

Is broom herb safe during pregnancy?

No, broom herb is unsafe during pregnancy and should be strictly avoided. Sparteine has oxytocic properties that can stimulate uterine contractions, potentially causing miscarriage or premature labor. The cardiac effects may also harm fetal development. Breastfeeding women should likewise avoid this herb due to potential toxicity to infants and insufficient safety data. Women of childbearing age should use reliable contraception if taking this herb medicinally. Evidence level: C/Traditional.

What are the side effects of broom herb?

Broom herb can cause serious side effects, particularly in overdose. Common adverse effects include hypertension, cardiac arrhythmias, dizziness, headache, and gastrointestinal upset. Severe toxicity can lead to respiratory depression, heart failure, and potentially death. The herb is considered toxic with a narrow therapeutic window. Individuals with existing heart disease, high blood pressure, or cardiac conditions should avoid it entirely. Medical supervision is essential for anyone considering its use. Evidence level: C/Traditional.

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

Cytisus scoparius, commonly known as Scotch broom, is a Mediterranean shrub and global invasive species [PMID: 27105397, PMID: 38858860].

Contexte

Scotch broom is a nitrogen-fixing shrub native to Europe and the Mediterranean that has expanded to every habitable continent [PMID: 38858860, PMID: 34981220]. It is characterized as a cosmopolitan invasive species that can affect local flora, fauna, and soil chemistry [PMID: 27105397, PMID: 34981220].

Usages traditionnels

It is used in folk medicine for the treatment of several ailments, where its antioxidant and anti-inflammatory effects are suggested to be beneficial [PMID: 23751539].

Composés actifs

The plant contains flavonoids, flavonols, and other polyphenolic compounds [PMID: 16542432, PMID: 26048835]. It also produces volatile organic compounds (VOCs) including eugenol, verbenone, terpinen-4-ol, α-terpineol, and linalool [PMID: 31835831].

Mécanisme d'action

Extracts from C. scoparius exhibit radical scavenging capacity (DPPH, nitric oxide, superoxide anion, and hydroxyl radicals) and reducing power, suggesting an antioxidant mechanism [PMID: 16542432, PMID: 23751539].

Preuves cliniques

Preuve DOxidative skin damage

Flavonoid- and carotenoid-rich extracts showed antioxidant activities comparable to synthetic antioxidants and lacked skin-irritant effects at 1% concentration, making them candidates for topical skin protection against UV-mediated oxidative damage [PMID: 23751539]

Preuve DBacterial and fungal infections

Methanolic extracts of aerial parts showed antimicrobial activity against Bacillus subtilis, Escherichia coli, Candida albicans, and Cryptococcus neoformans, though activity was lower than ampicillin and Amphotericin-B [PMID: 22557052]

Preuve DFoodborne pathogens

Hydro-organic extracts with high polyphenolic content demonstrated antimicrobial activity and biofilm dispersion against Listeria monocytogenes, Staphylococcus aureus, and Pseudomonas aeruginosa [PMID: 37998847]

Sécurité et effets indésirables

Direct application of plant biomass to soils may cause phytotoxicity due to the release of polyphenols [PMID: 30198404]. A case report titled 'Scotch broom poisoning' exists, though specific details were not provided in the abstract [PMID: 23384577].

Synthèse des preuves

The available evidence is primarily based on in vitro studies (antioxidant and antimicrobial assays) and ecological research regarding its invasive nature; there are no clinical trials or systematic reviews supporting therapeutic use in humans.

Sources PubMed

1.PMID: 19788012 (2009) — Scotch broom, Cytisus scoparius. · Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology
2.PMID: 27105397 (2016) — Introduced Scotch broom (Cytisus scoparius) invades the genome of native populations in vulnerable heathland habitats. · Molecular ecology
3.PMID: 38858860 (2024) — Global expansion of Cytisus scoparius (L.) Link over 200 years. · Plant biology (Stuttgart, Germany)
4.PMID: 32041239 (2020) — The Phytotoxic Potential of the Flowering Foliage of Gorse (Ulex europaeus) and Scotch Broom (Cytisus scoparius), as Pre-Emergent Weed Control in Maize in a Glasshouse Pot Experiment. · Plants (Basel, Switzerland)
5.PMID: 36015460 (2022) — Do Reproductive Traits of Invasive Populations of Scotch Broom, Cytisus scoparius (Fabaceae), Outperform Native Populations?

Herbe de balai

Sources et citations

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