Benzoin

Traditional Use

Primary Actions

• Opens the orifices and revives consciousness - used for cold-type closure, phlegm obstruction, sudden collapse, and loss of consciousness when aromatic penetrating resins are needed to restore awareness.
• Dispels turbidity and foul obstruction - applied when filthy or turbid pathogenic factors cloud the Heart orifices, including cold-phlegm presentations with clenched jaw, chest oppression, and altered consciousness.
• Invigorates Blood, moves Qi, and alleviates pain - especially valued for sudden chest pain and abdominal pain from cold congealing, qi stagnation, and blood stasis.
• Can extend to channel obstruction and phlegm-related respiratory states - some modern usage includes bronchitic or phlegm-laden presentations where aromatic opening and qi movement are clinically relevant.

Secondary Actions

• An Xi Xiang is usually taken as powder, pill, paste, or tincture rather than standard decoction because the resin does not dissolve well in water and direct fire damages its aroma.
• The herb sits between orifice-opening resins and blood-moving aromatics, making it especially useful when cold phlegm closure and pain-stasis coexist.

Classic Formulas

• Su He Xiang Wan (苏合香丸) - classic cold-closure emergency pill in which An Xi Xiang joins other aromatic resins to open the orifices, dispel turbidity, and revive consciousness in sudden collapse.
• Guan Xin Su He Wan (冠心苏合丸) - later chest-pain formula using the aromatic opening and qi-blood-moving properties of An Xi Xiang for cold-type anginal chest pain and chest impediment.
• Zhi Bao Dan (至宝丹) - emergency pill tradition in which prepared An Xi Xiang paste serves as a binding and aromatic opening component.

Classical References

• Me and Qi describes An Xi Xiang as a Tang-dynasty-recorded aromatic resin primarily used for emergency loss of consciousness, chest and abdominal pain, postpartum fainting, and childhood convulsions.
• American Dragon lists its actions as opening the orifices, resolving phlegm, awakening the spirit, invigorating Blood, promoting the movement of Qi, and alleviating pain, with dosage mainly in pills and powders rather than decoction.
• Classical processing guidance warns against strong direct heating and instead favors powdering, warm alcohol dissolution, or wine-steamed paste preparation for pill formulas.