Traditional Chinese Medicine Pharmacology: Materia Medica

Traditional Chinese medicine pharmacology and Materia Medica (中药学) represents one of the most comprehensive pharmaceutical traditions in the world — a system of herbal medicine developed over three thousand years that classifies, prepares, and combines medicinal substances according to sophisticated theoretical principles. From the "Shennong Bencao Jing" to modern pharmacopoeias, Chinese herbal medicine addresses virtually every condition.

Classification of Medicinal Substances

Chinese medicinal substances are classified by multiple criteria: by "origin" (来源) — botanical, zoological, and mineral; by "property" (性质) — cold, cool, neutral, warm, and hot; by "flavor" (味道) — sweet, sour, bitter, pungent, and salty; and by "meridian entry" (归经) — the channels the substance affects. The "Bencao" (本草) tradition catalogs substances — Li Shizhen's "Compendium of Materia Medica" (本草纲目, 1596) lists 1,892 substances. The "Shennong Bencao Jing" (神农本草经) is the earliest pharmaceutical text.

Formula Composition

Chinese formulas combine multiple substances: the "monarch" (君药) — the main ingredient; the "minister" (臣药) — supporting ingredient; the "assistant" (佐药) — moderating ingredients; and the "envoy" (使药) — guiding ingredient. Preparations include: "decoctions" (汤剂), "pills" (丸剂), "powders" (散剂), "medicinal wines" (药酒), and modern forms like capsules and tablets. Common formulas include "Four Gentlemen" (四君子汤) and "Cinnamon and ginger decoction" (桂枝汤).

Major Categories and Applications

Chinese herbs serve various purposes: "tonifying" (补益) — ginseng, astragalus, goji berries; "clearing heat" (清热) — coptis, scutellaria, chrysanthemum; "invigorating blood" (活血) — salvia, saffron, angelica; "resolving dampness" (祛湿) — poria, coix seed; and "calming spirit" (安神) — zizyphus, polygala. Each category has specific applications, with trained practitioners addressing complex conditions through formula modification.