This product is not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the Food and Drug Administration.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider before using herbs, especially if you are pregnant, nursing, taking medications, or have a medical condition.
How does Daphne genkwa work as a diuretic and purgative?
Daphne genkwa contains diterpenoid compounds, particularly yuanhuacin and genkwadaphnin, which stimulate intestinal motility and promote fluid excretion. These compounds act as strong purgatives by irritating the gastrointestinal mucosa, triggering increased peristalsis and water secretion into the intestinal lumen. The herb's diuretic effect occurs through enhanced renal fluid excretion. Evidence Level: C. The mechanism is similar to other stimulant laxatives but significantly more potent, requiring careful dosing to avoid toxicity.
Is Daphne genkwa safe to take during pregnancy?
Daphne genkwa is absolutely contraindicated during pregnancy. The herb contains compounds that stimulate strong uterine contractions and have documented abortifacient effects. Historical use in traditional Chinese medicine included this herb specifically for inducing abortion. The diterpenoid compounds yuanhuacin and genkwadaphnin can cause fetal harm and pregnancy termination. Evidence Level: C. Women who are pregnant, attempting to conceive, or breastfeeding must avoid this herb entirely due to these serious risks.
What is the recommended dosage for Daphne genkwa?
The traditional adult dosage for Daphne genkwa is 1.5 to 3 grams of prepared flower buds as a decoction, taken under strict professional supervision. The herb must be properly processed, typically vinegar-fried, to reduce toxicity before use. Raw, unprocessed Daphne genkwa is significantly more toxic and should never be consumed internally. Evidence Level: C. Dosage should never exceed recommended amounts, and treatment duration should be limited. Self-medication is strongly discouraged due to the narrow therapeutic window.
Does Daphne genkwa interact with any medications?
Daphne genkwa has significant potential for drug interactions due to its hepatotoxic properties and strong purgative effects. It should not be combined with other hepatotoxic medications, conventional diuretics, laxatives, or cardiac drugs. The herb may potentiate potassium depletion when used with diuretics, increasing arrhythmia risk. Its effects on intestinal transit may alter absorption of orally administered medications. Evidence Level: C. Patients taking prescription medications should avoid this herb unless under strict medical supervision.
What are the side effects and toxicity risks of Daphne genkwa?
Daphne genkwa carries significant toxicity risks including severe gastrointestinal irritation, abdominal pain, and bloody diarrhea. Hepatotoxicity is a documented concern with potential for elevated liver enzymes and liver injury. The herb can cause spontaneous abortion due to uterine stimulation. Other adverse effects include dizziness, headache, and in severe cases, respiratory failure or cardiac arrhythmias from electrolyte imbalances. Evidence Level: C. The therapeutic window is narrow, and overdose can be life-threatening. Proper processing reduces but does not eliminate toxicity risks.
PubMed-compiled information sheet
This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.
Compiled from 30 PubMed articles · model: gemma4:31b
Summary
Daphne genkwa is a traditional medicinal plant distributed in China, Korea, and Vietnam, known for its broad spectrum of pharmacological effects including anti-inflammatory and anticancer activities [PMID:38906384, PMID:35204693].
Background
Daphne genkwa is a deciduous shrub found in East Asia [PMID:42329339]. In traditional Chinese medicine, its dried flower buds are referred to as "Yuanhua" or "Genkwa flos" [PMID:38906384, PMID:35870686].
Traditional uses
Traditionally used to promote urination, eliminate phlegm, alleviate cough, eliminate parasites, and treat scabies [PMID:38906384]. It is also used for inflammation-related symptoms, joint pain [PMID:24685587], scabies baldness, carbuncles, and chilblains [PMID:37241730]. Vinegar-processed Daphne genkwa is used internally for asthma, constipation, and chest or abdominal water accumulation [PMID:37241730].
Active compounds
The plant contains daphnane-type diterpenes (including yuanhuacin and its analogues: yuanhuadin, yuanhuafin, yuanhuagin, yuanhuahin, yuanhuajin, yuanhualin, yuanhuamin, yuanhuapin, and yuanhuatin) [PMID:35204693], lathyrane-type diterpenoids (daphngenoids A-C) [PMID:41722672], tigliane-type diterpenoids [PMID:36382781], meroterpenoids [PMID:37659144], and sesquiterpenoids (daphneaines A-G) [PMID:32213358, PMID:31927316]. Flavonoids include genkwanin, hydroxygenkwanin, luteolin, and apigenin [PMID:32199350, PMID:24685587].
Mechanism of action
Anti-tumor effects of yuanhuacin are linked to Protein kinase C [PMID:35204693]. Meroterpenoids may inhibit the PI3K/Akt/mTOR signaling pathway [PMID:37659144]. Yuanhuacine regulates the JAK1/STAT3 pathway to modulate IL-6 [PMID:40692765]. Hydroxygenkwanin exerts osteoprotective effects via the LRG1-PJA1-PML axis [PMID:42302644]. Flower extracts may promote neuroprotective effects in microglia [PMID:36240609].
Clinical evidence
Evidence BAnal Fistula (Wound Healing)
External application of D. genkwa root extractive in 60 patients post-surgery was studied to evaluate wound healing times and granulation tissues [PMID:28396516]
Yuanhuacin and other daphnane diterpenes showed potent in vitro and in vivo activity against lung and breast cancers [PMID:35204693] and colorectal cancer [PMID:40023971].
Evidence DRheumatoid Arthritis
Flavonoid aglycones significantly decreased paw edema and arthritis scores in rat models [PMID:24685587]. Genkwanin was identified as the most effective anti-RA component in vitro [PMID:32199350].
Evidence DHerpes Simplex Virus (HSV-1)
Vinegar-processed flos (vp-genkwa) reduced viral replication and mortality in a genital infection model by activating NK cells [PMID:25922598].
Evidence DAcute Kidney Injury (AKI)
Yuanhuacine effectively prevented tubular damage and regulated IL-6 in a mouse model of AKI [PMID:40692765].
Safety & adverse effects
Daphne genkwa is described as a traditional toxic Chinese medicine [PMID:22389143]. Vinegar processing is commonly used to reduce the toxicity of the crude herb [PMID:37241730].
Drug interactions
Total flavonoid extracts (TFDG) and monomers (apigenin, luteolin, hydroxygenkwanin, genkwanin) inhibit CYP2C8 activity in vitro; apigenin and TFDG showed potential for in vivo inhibition [PMID:35621148].
Evidence summary
The evidence consists primarily of in vitro studies, animal models (rats, mice), and one small-scale clinical observation for wound healing. There are no large-scale human RCTs or meta-analyses provided.
PubMed sources
1.PMID: 38906384 (2024) — Daphne genkwa: Ethnopharmacology, phytochemistry and pharmacology of an important traditional Chinese medicine. · Fitoterapia
2.PMID: 36240609 (2023) — Daphne genkwa flower extract promotes the neuroprotective effects of microglia. · Phytomedicine : international journal of phytotherapy and phytopharmacology
3.PMID: 35204693 (2022) — Yuanhuacin and Related Anti-Inflammatory and Anticancer Daphnane Diterpenes from Genkwa Flos-An Overview. · Biomolecules
4.PMID: 35870686 (2022) — Uncovering the efficacy and mechanisms of Genkwa flos and bioactive ingredient genkwanin against L. monocytogenes infection. · Journal of ethnopharmacology
5.PMID: 22389143 (2012) — Anticancer drugs from traditional toxic Chinese medicines. · Phytotherapy research : PTR
Government sources
No direct government monograph is available for this herb. The content below is AI-generated and has not been verified against an authoritative government source. Use the search links to check official sources before relying on this information.
6.PMID: 39342895 (2024) — Ultrasound-assisted extraction, optimization, and purification of total flavonoids from Daphnegenkwa and analysis of their antioxidant, anti-inflammatory, and analgesic activities. · Ultrasonics sonochemistry
7.PMID: 41722672 (2026) — Undescribed and nephroprotective diterpenoids from Daphne genkwa. · Phytochemistry
8.PMID: 32199350 (2020) — Anti-rheumatoid arthritis effects of flavonoids from Daphne genkwa. · International immunopharmacology
9.PMID: 24685587 (2014) — Antioxidant effects of Genkwa flos flavonoids on Freund׳s adjuvant-induced rheumatoid arthritis in rats. · Journal of ethnopharmacology
10.PMID: 25922598 (2015) — Anti-herpes Activity of Vinegar-processed Daphne genkwa Flos Via Enhancement of Natural Killer Cell Activity. · Immune network
11.PMID: 35283165 (2022) — Guided isolation of daphnane-type diterpenes from Daphne genkwa by molecular network strategies. · Phytochemistry
12.PMID: 42329339 (2026) — Liquid chromatography-mass spectrometry-based automated annotation program-assisted structural characterization of daphnane diterpenoids from Daphne genkwa. · Journal of natural medicines
13.PMID: 40692765 (2025) — Yuanhuacine modulates lipopolysaccharide-induced interleukin-6 through regulation of the JAK1/STAT3 pathway and prevents tubular damage in acute kidney injury. · Experimental and therapeutic medicine
14.PMID: 36382781 (2023) — Tigliane-and daphnane-type diterpenoids from the buds of Daphne genkwa with their cytotoxic activities. · Natural product research
15.PMID: 37659144 (2023) — Meroterpenoids from Daphne genkwa shows promising in vitro antitumor activity via inhibiting PI3K/Akt/mTOR signaling pathway in A549 cells. · Bioorganic chemistry
16.PMID: 42302644 (2026) — Hydroxygenkwanin exerts osteoprotective effects by regulating LRG1-PJA1-PML axis. · Phytomedicine : international journal of phytotherapy and phytopharmacology
17.PMID: 35621148 (2022) — Effects of the total flavonoid extracts and the monomers of Daphne genkwa on CYP2C8 activity. · Xenobiotica; the fate of foreign compounds in biological systems
18.PMID: 32213358 (2020) — Sesquiterpenoids from the roots of Daphne genkwa Siebold et Zucc. With potential anti-inflammatory activity. · Phytochemistry
19.PMID: 24561028 (2014) — Anti-rheumatoid arthritic activity of flavonoids from Daphne genkwa. · Phytomedicine : international journal of phytotherapy and phytopharmacology
21.PMID: 31927316 (2020) — Discovery of guaiane-type sesquiterpenoids from the roots of Daphne genkwa with neuroprotective effects. · Bioorganic chemistry
22.PMID: 28396516 (2017) — Root extractive from Daphne genkwa benefits in wound healing of anal fistula through up-regulation of collagen genes in human skin fibroblasts. · Bioscience reports
23.PMID: 37241730 (2023) — Identification of Daphne genkwa and Its Vinegar-Processed Products by Ultraperformance Liquid Chromatography-Quadrupole Time-of-Flight Mass Spectrometry and Chemometrics. · Molecules (Basel, Switzerland)
24.PMID: 25744061 (2015) — Functional restoration of exhausted CD4(+) and CD8(+) T cells in chronic viral infection by vinegar-processed flos of Daphne genkwa. · Comparative immunology, microbiology and infectious diseases
25.PMID: 40023971 (2025) — Uncovering the underlying mechanism of yuanhuacine against colorectal cancer by transcriptomics and experimental investigations. · Phytomedicine : international journal of phytotherapy and phytopharmacology