TCM Properties

Traditional Use

Warms Kidney Yang and rescues devastated Yang — extreme Yang deficiency, cold collapse, severe cold-limb pattern
Dispels Cold and alleviates severe pain — Wind-Cold-Damp Bi syndrome with intense joint and muscle pain unresponsive to milder warming herbs
Warms and unblocks the channels — chronic cold-obstructed pain in the back, knees, and extremities

Tibetan and Sichuan highland folk medicine: used as an anti-inflammatory and analgesic for high-altitude rheumatic conditions where Fu Zi (processed A. carmichaelii root) is unavailable
External use (processed only): topical liniment or plaster for joint pain — aconitine alkaloids penetrate skin and produce local anaesthetic and anti-inflammatory effects at sub-systemic doses

SAFETY-CRITICAL HERB: Aconitum naviculare (Bruhl) Stapf is a Himalayan and highland Sichuan/Yunnan/Tibet border Aconitum species used primarily in Tibetan medicine (Sowa-Rigpa tradition) and highland Chinese folk medicine; it is NOT the same as Fu Zi (Radix Aconiti Lateralis Praeparata, processed A. carmichaelii) or Cao Wu (Radix Aconiti Kusnezoffii), though all contain similar norditerpenoid alkaloids
Tibetan Materia Medica (Bod-kyi sMan-dpe): records boat-shaped aconite (Lcags-kyu in Tibetan) as a powerful Yang-warming herb requiring mandatory processing to reduce aconitine content before internal use; processed root or aerial herb administered only under experienced practitioner guidance for Cold-obstructed pain syndromes

Aconitine (C34H47NO11 — principal norditerpenoid alkaloid; potent cardiac Na+ channel activator; extremely toxic in raw form; LD50 ~0.1 mg/kg i.v. in mice)
Mesaconitine (norditerpenoid alkaloid; similar pharmacology to aconitine; cardiac and neurotoxic)
Hypaconitine (norditerpenoid alkaloid; less potent than aconitine; still toxic at small doses)
Benzoylaconine and aconine (less toxic hydrolysis products formed during processing/paozhi — represent the therapeutically useful detoxified forms)
Navicularine and related Aconitum naviculare-specific minor alkaloids (characterised to lesser extent than A. carmichaelii alkaloids)

Cardiac sodium channel pharmacology: aconitine binds to site 2 of voltage-gated Na+ channels (Nav1.4, Nav1.5) and causes persistent channel opening, leading to membrane depolarisation, calcium overload, and triggered ventricular arrhythmias; this mechanism explains both the warming/stimulating therapeutic effect at micro-doses and the potentially fatal arrhythmias at toxic doses — narrow therapeutic window is intrinsic to the aconitine alkaloid class
Anti-inflammatory and analgesic: benzoylaconine and aconine (the less toxic processed-aconite alkaloids) inhibit COX-2 and reduce prostaglandin E2 production in inflammatory models; local anaesthetic effect arises from transient Na+ channel blockade at sub-threshold concentrations — validates the analgesic indication for Cold-obstructed pain syndromes when properly processed herb is used
Processing (paozhi) efficacy: traditional processing with prolonged decocting or soaking in water significantly reduces aconitine and mesaconitine content through hydrolysis to benzoylaconine and aconine (100–1000-fold less toxic); processed herb retains anti-inflammatory efficacy while substantially reducing arrhythmia risk — the paozhi requirement is pharmacologically validated and non-negotiable for internal use

Unprocessed (raw) herb for internal use — ABSOLUTELY CONTRAINDICATED; raw aconite has caused numerous documented fatalities
Pregnancy — embryotoxic and teratogenic; absolutely contraindicated
Heat patterns, Yin deficiency with Heat, or any condition without clear Cold-Deficiency presentation — hot herb contraindicated
Concurrent use with cardiac medications without specialist supervision
Children — no safe dose established

SAFETY-CRITICAL: This herb contains aconitine, mesaconitine, and hypaconitine — one of the most toxic alkaloid groups in Chinese materia medica. The therapeutic window between analgesic and lethal doses is extremely narrow. Internal use MUST involve properly processed herb under experienced practitioner supervision only.
SAFETY-CRITICAL: Symptoms of aconitine poisoning — numbness and tingling of lips, tongue, and extremities; nausea, vomiting, diarrhoea; hypotension; bradycardia or ventricular arrhythmias; respiratory depression — onset within 30 minutes of ingestion. Seek emergency care immediately.
Cardiac glycosides (digoxin): additive arrhythmogenic risk; avoid combination
Antiarrhythmic drugs (amiodarone, flecainide, quinidine): pharmacodynamic interaction — unpredictable cardiac effects
Beta-blockers: may mask early signs of aconitine-induced tachycardia; combined use may precipitate severe bradycardia
QT-prolonging drugs: additive risk of fatal ventricular arrhythmia
Traditional processing (paozhi) for this species: prolonged boiling (minimum 30–60 minutes) or overnight water-soaking followed by decocting is required to hydrolyse aconitine to less toxic benzoylaconine; processed dose typically 1.5–3 g in decoction under supervision

Cardiac glycosides (digoxin) — additive arrhythmogenic effect; contraindicated combination
Antiarrhythmic drugs (amiodarone, flecainide, quinidine, lidocaine) — unpredictable cardiac pharmacodynamic interaction
Beta-blockers — may precipitate severe bradycardia; masks tachycardia warning sign
QT-prolonging medications — additive risk of fatal ventricular arrhythmia
CNS depressants — additive respiratory depression at toxic doses