Dravadravyavijnaniya Adhyāya — Dravya Theory and Clinical Application (Ashtanga Hridayam Chapter 9)
Introduction of dravya Chapter 9 of Ashtanga Hridayam (Dravadravyavijnaniya ) lays the foundation of Ayurvedic pharmacology: what a dravya (substance) is, how its qualities (guṇa) and tastes (rasa) act on the body, and how these properties determine therapeutic use. This chapter explains the classical framework—panchamahabhuta basis, rasa, virya, vipaka, guṇa, and prabhava, element‑based qualities, guṇa, […]
