INTRODUCTION
Ayurveda-the “Holistic Science”,for a healthy body,mind & soul.A science that enlights facts about ‘Ayu’ or Life.Ayurveda vividly describes about all for finds of Ayu; Hithayu,Ahithayu,Sukhayu & Dukhayu.Great Aacharyas or sages of yore has focused on this science mainly to,
Ø Explain about beneficial & harmful facts about ones being.
Ø To explain causitory factors of various diseases.
Ø To give curative measures for diseases.
The science mainly aims at proecting the
health of a healthy person & to cure diseases of an ill.
Dravyaguna Vijnana is defind as the science the describes in detail about all physicophamacological properties,actions & modes of administration of drugs.the word Dravyaguna Vijnana is a combination of two words, Dravya & Guna , which means a detailed study of Dravya & Guna.In this content , Guna refers to all Rasa , Guna , Veerya & Vipaka of drug.Relation of plants with man is old as mankind & they were with him in all steps of his development.
The documentation of plants started from vedic period but they mainly dealt with food articles & very few for medicinal purposes with the development of Ayurveda,the knoeledge about medicinal value of plant developed a lot & the number of drugs for medicinal purposes increased gradually in number.Later , in course of time , man learnt use of animal & mineral drugs also along with herbal sources.
Samhithas, Nighantus...etc are the main documented sources to know about the medicinal aspects of drugs.Contribution of parasara , needs a special mention in this context regarding his work ‘Vrikshaayurveda’ ,mainly dealing with botanical aspects & classification of good number of plants along with description of characters of each group.
The history of Dravyaguna can be divided depending upon time period as ,
Prehistonic period-Pragaithihasika kala(before 1500 BC)
Historic period-Aithihasika kala
Vaidika kala ( 1500-1000 BC )
Samhitha kala ( 1000 BC -10 AD )
Nighantu kala ( 10-18 AD )
Modern period ( 18 AD onwards )
Importance of Dravyaguna Vijnana
Drugs not known in terms of names , form & properties & even if known well but applied improperly creates haroc.
Oushadhi sutra is one among three sutras of Ayurveda.Dravya is one among four limbs of treatment (Chikitsa Chathushpada) hence it is very important to study about Dravya.Number of drugs in this universe is quite large