Xuan Shen (Scrophularia ningpoensis): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does Xuan Shen work to reduce inflammation?

Xuan Shen (Scrophularia ningpoensis) contains bioactive iridoids, particularly harpagide and harpagoside, which demonstrate anti-inflammatory properties by inhibiting pro-inflammatory mediators. These compounds, along with aucubin and phenylethanoids, contribute to the root's ability to clear heat and nourish yin according to TCM principles. Research suggests these constituents may modulate inflammatory pathways, though clinical evidence remains limited (Evidence Level C). Traditional use emphasizes its cooling properties for addressing heat patterns manifesting as sore throat, swellings, and febrile conditions.

Does Xuan Shen interact with any medications?

Xuan Shen has documented incompatibility with black hellebore (Veratrum species) in Traditional Chinese Medicine theory, and these should not be combined. Due to its anti-inflammatory constituents like harpagoside, theoretical interactions with anticoagulant or antiplatelet medications may exist, though specific clinical data is lacking. Patients taking blood thinners, immunosuppressants, or anti-inflammatory drugs should consult a qualified practitioner before use. Evidence Level C indicates limited clinical interaction studies, so caution is advised when combining with pharmaceutical treatments.

What is the recommended dosage of Xuan Shen?

The standard adult dosage of Xuan Shen is 9-15 grams of dried root daily, typically prepared as a decoction in combination with other herbs in a TCM formula. This dosage is based on traditional use and pharmacopoeial standards (Evidence Level C - limited clinical trials). Dosage may vary depending on the specific condition being treated, individual constitution, and whether the herb is used alone or in a formula. A qualified TCM practitioner should determine the appropriate dosage for your specific situation.

Is Xuan Shen safe to take during pregnancy?

Xuan Shen (Scrophularia ningpoensis) is considered unsafe during pregnancy and should be avoided. As a cooling herb that clears heat and promotes movement, it may stimulate uterine contractions or affect fetal development according to TCM principles. There is insufficient safety data from clinical studies in pregnant populations. Women who are pregnant, breastfeeding, or attempting to conceive should not use Xuan Shen without explicit guidance from a qualified healthcare provider.

What are the side effects and contraindications of Xuan Shen?

Xuan Shen is generally well-tolerated when used appropriately, but may cause nausea in individuals with a cold constitution or weak digestion. It is contraindicated in cases of Spleen deficiency with diarrhea, as its cooling and moistening properties may worsen these conditions. The herb should not be used by those with cold-pattern digestive weakness. Evidence Level C indicates that comprehensive safety studies are limited. Discontinue use if digestive discomfort occurs and consult a qualified TCM practitioner.

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

Scrophularia ningpoensis Hemsl. (Xuan Shen) is a traditional Chinese medicinal plant used for centuries to treat inflammation, hypertension, diabetes, and other diseases [PMID:33338592].

Contexte

Scrophularia ningpoensis Hemsl. is a perennial medicinal plant from the Scrophulariaceae family [PMID:37373180]. Its dried roots, known as Scrophulariae Radix, are widely used in East Asia [PMID:33772290].

Usages traditionnels

Traditional uses include treating inflammation, hypertension, cancer, and diabetes [PMID:33338592]. It is used for clearing heat, cooling blood, nourishing 'Yin', reducing fire, detoxifying, and resolving masses [PMID:33338592, PMID:33772290].

Composés actifs

The plant contains iridoids (including harpagide and harpagoside) [PMID:22242433, PMID:42218858], phenylpropanoid glycosides (such as ningposides A, B, and C, and acetoside) [PMID:11014290, PMID:24288088], phenolic glycosides [PMID:39419125], phenolic acids, alkaloids, flavonoids, and triterpenes [PMID:33772290]. Angoroside C is identified as a potent AMPK activator [PMID:40440908].

Mécanisme d'action

Mechanisms include activation of AMP-activated protein kinase (AMPK) to improve insulin sensitivity and inhibit the NLRP3 inflammasome [PMID:35792447, PMID:40440908]. It may inhibit the NF-κB pathway and affect the MAPK pathway [PMID:24288088]. In depression models, polysaccharides from the herb inhibit HTR2A/HTR2C mediated AKT/GSK3β/β-catenin/CBP/BDNF signaling [PMID:39884598]. For nephrogenic edema, it may regulate energy metabolism and reduce inflammation [PMID:37814466].

Preuves cliniques

Preuve BHypertension

Xuanshen Yishen Decoction (XYD) plus antihypertensive regimen showed a higher attainment rate of intensive blood pressure control (17.5%) compared to antihypertensive regimen alone (8.09%) [PMID:40372581].

Preuve DType 2 Diabetes Mellitus

Aqueous extract of S. ningpoensis improves insulin sensitivity through AMPK-mediated inhibition of the NLRP3 inflammasome [PMID:35792447]; Angoroside C alleviates metabolic syndrome in db/db mice [PMID:40440908].

Preuve DSlow Transit Constipation

Xuanshen decoction (XSD) significantly alleviated symptoms of loperamide-induced slow transit constipation in rats [PMID:40904888].

Preuve DNephrogenic Edema

S. ningpoensis can relieve nephrogenic edema by regulating renal function and reducing inflammation [PMID:37814466].

Preuve DDepression-like behavior

Polysaccharides from S. ningpoensis improved reserpine-induced depression-like behavior by restoring monoamine neurotransmitter homeostasis and hippocampal neurogenesis [PMID:39884598].

Synthèse des preuves

Evidence consists primarily of preclinical animal models (D) and one real-world data emulation of a randomized trial (B) for hypertension. Systematic reviews (C) summarize traditional uses and general pharmacology.

Sources PubMed

1.PMID: 33338592 (2021) — Pharmacology, phytochemistry, and traditional uses of Scrophularia ningpoensis Hemsl. · Journal of ethnopharmacology
2.PMID: 28867715 (2017) — New Iridoids from Scrophularia ningpoensis. · Chemical & pharmaceutical bulletin
3.PMID: 39884598 (2025) — Polysaccharides from Scrophularia ningpoensis Hemsl. improve reserpine-induced depression-like behavior by inhibiting HTR2A/HTR2C mediated AKT/GSK3β/β-catenin/CBP/BDNF signalling. · International journal of biological macromolecules
4.PMID: 37814466 (2024) — A metabolism-based study of the mechanism of action of Scrophularia ningpoensis Hemsl. on nephrogenic edema. · Biomedical chromatography : BMC
5.PMID: 38601543 (2024) — Metabolomics distinguishes different grades of Scrophularia ningpoensis hemsl: Towards a biomarker discovery and quality evaluation.

Xuan Shen

Sources et citations

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