# Vatsanabha > Vatsanabha (Aconitum ferox Wall. ex Ser.) is a plant used in Ayurveda. {'use': 'Antipyretic (Jvarahara)', 'validation': 'Aconitum alkaloids at sub-toxic doses suppress prostaglandin-mediated fever pathways. ## Key facts - **Botanical name:** Aconitum ferox Wall. ex Ser. ## Names and identification | Language | Name | |----------|------| | English | Vatsanabha | | Latin/Botanical | *Aconitum ferox Wall. ex Ser.* | ## Which traditional uses are supported by research? - {'use': '[Antipyretic](/reference/antipyretic/) (Jvarahara)', 'validation': 'Aconitum [alkaloids](/glossary/compounds-1-a/#alkaloids) at sub-toxic doses suppress prostaglandin-mediated fever pathways. Traditional use as febrifuge validated by in vivo studies showing dose-dependent antipyretic activity comparable to paracetamol in animal models.'} - {'use': 'Anti-inflammatory and [analgesic](/reference/analgesic/) (Vedanasthapana, Shothahara)', 'validation': 'Low-dose processed aconitine preparations show significant anti-inflammatory activity by suppressing NF-kB pathway and COX-2 expression. Analgesic effect mediated through sodium channel modulation at sub-toxic doses. Used in traditional medicine across Himalayan regions for rheumatic pain.'} ## What do recent clinical trials show? - Kent JT, Sathya A, Juurlink DN and others 2025. [Mass aconite poisoning from a mislabelled spice product](https://pubmed.ncbi.nlm.nih.gov/40637172/). *Clinical toxicology (Philadelphia, Pa.)*. PMID [40637172](https://pubmed.ncbi.nlm.nih.gov/40637172/) · [doi:10.1080/15563650.2025.2526115](https://doi.org/10.1080/15563650.2025.2526115) 11 patients presented with perioral paraesthesia (91%), nausea/vomiting/abdominal pain (64%) after consuming mislabelled aconite-containing spice product. Highlights danger of Aconitum species entering food supply chain. - Tomita Y, Suzuki K, Kaizaki-Mitsumoto A and others 2025. [Jesaconitine monitoring in a case of severe aconitum poisoning with torsade de pointes treated via extracorporeal membrane oxygenation](https://pubmed.ncbi.nlm.nih.gov/39980743/). *Acute medicine & surgery*. PMID [39980743](https://pubmed.ncbi.nlm.nih.gov/39980743/) · [doi:10.1002/ams2.70047](https://doi.org/10.1002/ams2.70047) First case report of successful monitoring of jesaconitine levels during ECMO treatment for severe aconite poisoning with torsade de pointes arrhythmia. ECMO provided life-saving hemodynamic support. *2 further claims previously listed here could not be traced to a published paper and have been removed. An absence here means we could not identify the source, not that no work exists.* ## Recent safety updates - {'type': 'Poisoning case', 'detail': '2025: Mass poisoning event from mislabelled aconite spice product - 11 patients hospitalized with onset within minutes. Perioral paraesthesia was the hallmark symptom (91% of cases). All survived with aggressive supportive care.'} - {'type': 'Poisoning case', 'detail': '2024-2025: Multiple cases of accidental aconite poisoning from herbal liquors and traditional medicines in China and South Asia. A 2025 convergent analytical approach identified aconitine in homemade herbal liquors linked to fatal poisoning cases.'} - {'type': 'Antidote', 'detail': 'NO SPECIFIC ANTIDOTE EXISTS. Treatment is entirely supportive: IV amiodarone or lidocaine for ventricular arrhythmias (limited efficacy), sodium bicarbonate for wide-complex tachycardia, vasopressors for hypotension, temporary pacing for bradycardia. ECMO (extracorporeal membrane oxygenation) has been life-saving in severe cases with refractory cardiogenic shock.'} - {'type': 'Maximum dose', 'detail': 'Purified (Shuddha) Vatsanabha dose: 15-30 mg per day (after proper Shodhana). NEVER use unpurified root. Raw root: 1-2 mg of aconitine is lethal. The therapeutic window is extremely narrow even after purification.'} - {'type': 'Safety alert', 'detail': 'EXTREMELY DANGEROUS: Aconitum ferox is one of the most toxic plants known. Toxicity can occur from skin contact alone. Processing does not eliminate all toxicity. Even purified preparations can cause fatal arrhythmias if dose is exceeded. Must be prescribed only by experienced practitioners.'} - {'type': 'Forensic concern', 'detail': "Aconitine is virtually undetectable by standard toxicology screens and has been used as a homicidal poison historically ('queen of poisons'). Detection requires specific LC-MS/MS analysis of blood and urine. Post-mortem redistribution complicates forensic analysis."} ## Dosage forms and preparation **Dosage Forms:** Shodhit (purified) Churna, Vati (tablet), Capsule, EXTERNAL USE: Lepa (paste), Taila (oil) **Standard Dosage:** TOXIC HERB - Only after Shodhana: 15-60 mg of Shodhit (purified) powder per dose; NEVER exceed 125 mg/day; ONLY under qualified Ayurvedic physician supervision **Bioavailability:** Aconitine and related diterpene alkaloids are rapidly and almost completely absorbed orally (bioavailability >80-90%), which contributes to extreme toxicity. Lethal dose of crude aconitine is 2-5 mg in adults. Onset of toxicity within 10-20 minutes of ingestion. Shodhana (purification by processing with cow urine or cow milk) hydrolyzes aconitine to less toxic benzylaconitine and aconine (1000-fold less toxic). Even after Shodhana, significant residual toxicity remains. Transdermal absorption is also rapid and clinically significant (poisoning from skin contact documented). **Optimal Timing:** Only as prescribed by qualified Vaidya; typically after meals with specific anupana; short-term use only **Standardized Extract:** Shodhit (purified) powder only; residual aconitine <0.05% by LC-MS/MS (mandatory safety limit); total alkaloid content reduced to <0.3% post-Shodhana **Shelf Life:** Shodhit powder: 12-18 months; Vati: 24 months; Must be retested for aconitine content if storage exceeds labeled shelf life **Storage:** POISON CUPBOARD - locked storage with restricted access. Airtight containers at 15-25 deg C. Label: SCHEDULE E1 / VISHA DRAVYA / POISON. Complete batch documentation and chain-of-custody records mandatory. Separate from non-toxic materials. **Marker Compounds:** Aconitine (must be below safety limit post-Shodhana), Mesaconitine, Hypaconitine, Benzylaconitine (less toxic hydrolysis product), Aconine (non-toxic hydrolysis product), Pseudaconitine, Bikhaconitine ### Extraction Methods - NOT extracted in crude form for internal use - Shodhana process: repeated trituration with cow's milk, cow's urine, or [Triphala](/herb/triphala/) decoction (7-21 cycles) to hydrolyze toxic ester alkaloids - Traditional Shodhana as per Rasa Tarangini or Rasatarangini text - For analytical purposes only: methanol extraction for alkaloid quantification by LC-MS ### Synergistic Combinations - [Trikatu](/herb/trikatu/) - traditionally combined post-Shodhana for enhanced therapeutic action with reduced toxicity - Tankana (borax) - processing adjunct during Shodhana - [Ghrita](/herb/ghrita/) (ghee) - lipid vehicle that modulates absorption rate - Maricha ([black pepper](/herb/black-pepper/)) - traditional combination in processed Vatsanabha formulations --- Canonical version of this page: https://nighantu.ageayurveda.com/herb/vatsanabha/ ## Sources - Amidha Ayurveda Herb Database (700+ herbs, CC-BY-4.0) - Web research (clinical trials, WHO monographs, safety databases) - Ayurvedic Pharmacopoeia of India Published by Age Ayurveda in the Nighantu. Educational reference only, not medical advice. Incorporates material from the Amidha Ayurveda Herb Database under CC BY 4.0.