About This Companion Series
This companion series explores how classical herb pairs and small groups of herbs express specific pathological mechanisms within Chinese herbal medicine. Rather than viewing formulas as fixed recipes, these articles examine how strategic combinations regulate relationships—interior and exterior, qi and blood, yin and yang—and thereby correct the underlying disease process. Each entry focuses on the clinical logic behind a pairing, its classical context, and the diagnostic considerations that guide its use. The aim is to clarify how formulas function internally, while reserving more advanced discussions on dosage ratios, dynamic modifications, and complex clinical applications for in-depth courses within the Greg’s TCM Teahouse Academy.