Ayurvedic pharmacology is termed Dravya vignan – ‘the science of drugs’. The Dravya or drug is Panchabhautik or composed of Panchabhuta
s / five elements. Ayurvedic pharmacology is based on the concept of these five great elements.
There are five categories of Dravya, each based on the inherent element of Panchabhuta that predominates : Parthiva (earth), Apya (water), Taijasa (Fire), Vayavya (Air) and Nabhasa (Ether). They are further classified into three according to the source from which they are derived. They are Jangama, Bhauma