Raphanus Sativus Herb (Raphanus sativus): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does Raphanus sativus work as a liver tonic?

Raphanus sativus functions primarily as a cholagogue, meaning it stimulates the secretion and flow of bile from the liver. This mechanism is driven by active compounds like glucosinolates and raphanin, which support hepatic detoxification pathways. By enhancing bile production, the herb aids in the digestion of fats and promotes efficient waste elimination. These actions align with its traditional use in Ayurvedic and European folk medicine for liver health, supported by Evidence Level C.

Can I take radish supplements if I am on thyroid medication?

Caution is advised when taking Raphanus sativus alongside thyroid medications. The herb contains raphanin, a compound that may interfere with thyroid hormone production. While specific drug interaction studies are limited (Evidence Level C), theoretical concerns exist regarding reduced efficacy of thyroid replacement therapy. Patients with hypothyroidism or those taking levothyroxine should consult a healthcare provider before adding medicinal doses of radish to their regimen.

What is the correct dosage for Raphanus sativus?

The standard adult dosage for Raphanus sativus is 50 to 100 grams of fresh radish root daily, or 500 mg of a standardized extract. This recommendation is based on traditional usage and pharmacopoeia standards (Evidence Level C). Users should begin with lower doses to assess tolerance, as excessive consumption can lead to gastrointestinal upset. For therapeutic use, consistent daily intake is suggested to support liver and digestive function.

Is radish safe to eat during pregnancy?

Yes, Raphanus sativus is considered safe for consumption during pregnancy when eaten in normal dietary amounts. Unlike many herbal remedies restricted during pregnancy, radish does not possess emmenagogue properties. However, pregnant women should avoid consuming excessive medicinal doses, as high amounts may cause gastrointestinal irritation. As always, it is best to consult a healthcare provider before using concentrated herbal extracts while pregnant.

Who should avoid taking Raphanus sativus?

Individuals with gallstones should strictly avoid Raphanus sativus. Because the herb stimulates bile flow (cholagogue effect), it can potentially force gallstones into the bile ducts, leading to obstruction or severe pain. Additionally, those with thyroid conditions should use caution due to the presence of raphanin. Side effects are generally limited to gastrointestinal upset at very high doses. Always consult a doctor if you have a history of biliary obstruction.

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

Raphanus sativus (radish) is a widely consumed Brassicaceae vegetable with identified antidiabetic, antioxidant, and chemopreventive properties [PMID:28906451, PMID:40652415].

Contexte

Raphanus sativus is an important cruciferous vegetable cultivated and consumed worldwide, with various cultivars including daikon and black radish [PMID:36311091, PMID:23495001].

Usages traditionnels

Folk medicine has used extracts from aerial and underground parts of radishes to treat stomach disorders, urinary infections, hepatic inflammation, cardiac disorders, and ulcers [PMID:30769862]; black radish (var. niger) is used in Mexican traditional medicine for the treatment of gallstones [PMID:23495001].

Composés actifs

Bioactive compounds include isothiocyanates (such as 4-methylthio-3-butenyl isothiocyanate [MTBITC] and sulforaphene), glucosinolates (glucoraphasatin and glucoraphenin), trigonelline, phenols, flavonoids, and polysaccharides such as rhamnogalacturonan-I [PMID:11743759, PMID:38597802, PMID:40903243, PMID:37513035, PMID:40652415].

Mécanisme d'action

Mechanisms include enhancing antioxidant defense and reducing free radicals [PMID:28906451], promoting nitric oxide (NO) production in vascular endothelial cells via trigonelline [PMID:40903243], and inducing apoptosis, cell cycle arrest, and anti-angiogenesis in cancer prevention [PMID:40652415]. It may also affect hormonal-induced glucose homeostasis and reduce intestinal glucose absorption [PMID:28906451].

Preuves cliniques

Preuve DDiabetes/Hyperglycemia

Japanese radish sprouts (JRS) showed hypoglycemic activity, lowering plasma glucose and insulin in both normal and streptozotocin-induced diabetic rats [PMID:16557609].

Preuve BVascular Function

Ingestion of 170 g/day of Sakurajima radish for ten days in humans increased blood trigonelline levels [PMID:32585930].

Preuve DCholesterol Gallstones

Black radish juice decreases plasma cholesterol levels and dissolves gallstones in mice [PMID:23495001].

Preuve DObesity/Gut Health

Radish green polysaccharide (RGP) exhibited prebiotic activity and inhibited fat accumulation in 3T3-L1 adipocytes [PMID:37513035].

Synthèse des preuves

The evidence consists primarily of in vitro studies, animal models (rats/mice), and a preliminary first-in-human trial. While there is strong laboratory evidence for antioxidant and antidiabetic effects, clinical confirmation in humans is limited.

Sources PubMed

1.PMID: 28906451 (2017) — Radish (Raphanus sativus) and Diabetes. · Nutrients
2.PMID: 38597802 (2024) — Comparative analysis of isothiocyanates in eight cruciferous vegetables and evaluation of the hepatoprotective effects of 4-(methylsulfinyl)-3-butenyl isothiocyanate (sulforaphene) from daikon radish (Raphanus sativus L.) sprouts. · Food & function
3.PMID: 36311091 (2022) — CRISPR/Cas9-mediated genome editing of RsGL1a and RsGL1b in radish (Raphanus sativus L.). · Frontiers in plant science
4.PMID: 11743759 (2001) — 4-(Methylthio)-3-butenyl isothiocyanate, a principal antimutagen in daikon (Raphanus sativus; Japanese white radish). · Journal of agricultural and food chemistry
5.PMID: 18345631 (2008) — Comparison of the glucosinolate-myrosinase systems among daikon (Raphanus sativus, Japanese white radish) varieties.

Raphanus Sativus Herb

Sources et citations

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