How a Chinese Herbal Formula Is Built: Chief, Deputy, Assistant and Envoy

A framework for arranging herbs

In traditional Chinese medicine a formula (fang ji) is a planned combination, not a random mix. The best-known plan is called jun chen zuo shi, usually translated as sovereign or monarch, minister, assistant and courier or envoy. One review says Chinese prescriptions are composed according to "seven compatible relations" and "sovereign, minister, assistant and courier" principles. [1] This is a traditional design framework, not a biochemical rule. It tells you how practitioners reason about a formula. It does not prove that any formula works.

The four roles

A review of herbs used for COVID-19 in China describes the roles this way. [2]

These roles describe intention within the tradition, where the aim is framed by patterns rather than biomedical diagnoses; see Traditional Pattern Differentiation in TCM.

Formulas change with the person

The same source notes that herbal formulations are frequently modified as signs and symptoms change along with the diagnosis. [2] That is why a practitioner's formula for one person may differ from a "named" classical formula. It is also why a trial of a fixed product may not match what happens in a clinic. For how practitioners plan and review treatment, see How TCM Treatment Plans Are Built.

This page gives structure only. It does not list ingredients to try or amounts. Never assemble, adjust or take a formula yourself on the basis of these roles.

What research has studied

Researchers have tried to study compatibility with modern methods. A review of methods in the field says compatibility research has moved from a traditional model, which studies whole and split formulas at the crude-drug level, to a modern model that studies herb compositions at the level of components. [1] That is laboratory design work. The abstract describes how studies are done, not a finding about patient outcomes.