Bencao Gangmu Reference Library
烟草 / 烟叶 / 相思草 / 金丝熏 / 乌香 / 芬草 — Nicotiana tabacum L.
Pinyin: Yāncǎo / Yānyè · Malay: Tembakau / Daun Tembakau / Pokok Tembakau · Family: Solanaceae (茄科)
Energetics
Warm to Hot (温 / 大温), Toxic internally (有毒 / 大毒)
Flavor
Pungent, acrid, bitter, burning, tongue-numbing (大辛、苦、大温、极麻舌、大毒)
Meridians
Lung (肺), Liver (肝), Stomach (胃), Large Intestine (大肠)
Traditional Edict
Tobacco (Tembakau / Yan Cao). Glandular pubescent leaves. World-famous jungle forestry repellent (Air Tembakau): paralyzes and detaches blood-sucking jungle land leeches (Pacet) instantly, destroys head lice and scabies, relieves severe dental pain.
Cautions & Contraindications
- HIGH NICOTINE TOXICITY WARNING: Ingestion of raw tobacco or concentrated water causes violent vomiting, tremors, respiratory paralysis, and cardiac collapse. NEVER APPLY CONCENTRATED EXTRACTS OVER LARGE OPEN BLEEDING WOUNDS. FORBIDDEN IN PREGNANCY.
Clinical Applications
- Jungle land leech envenomation prevention (Haemadipsa leech detachment), pediculosis capitis (head lice destruction), severe scabies (Sarcoptes scabiei), acute dental pulp toothache, and agricultural botanical pesticide.
Quality Markers
Mechanism & Phytochemistry
1. Nicotine acts as a potent agonist on invertebrate nicotinic acetylcholine receptors (nAChR), inducing rapid persistent neuromuscular depolarization and spastic paralysis in land leeches and ectoparasites. 2. Transdermal topical analgesia.
Preparation & Dosage
THE SOVEREIGN JUNGLE JUNGLE-LEECH REPELLENT WATER (Air Rendaman Tembakau Anti-Pacet): 50 g cured dried tobacco steeped in 500 mL water for 2 hours; sprayed onto hiking socks and boots. Emergency Leech Detachment: Apply tobacco water directly over attached leech.
Appended Prescriptions
- 1. The Sovereign Anti-Leech Jungle Spray (Air Tembakau) with Cymbopogon nardus (Serai Wangi). 2. Parasitic Scabies & Lice Eradication Wash with Stemona sessilifolia (Bai Bu).
Yemama Apothecary · Petaling Jaya, Malaysia · For educational and clinical reference only
