On the basis of origin ,the visha has been classified in to 2 groups.
1.Sthavar Visha-Poison obtained from animal source or mineral posion.
2.Jangam Visha-poison obtained from animal source
Acharya Sushruta added another third type of Visha criteri-
3.Kritrim Visha –includes artificial poison
Acharya Charaka included another type of Visha along with the above three types.
Gara visha-It is produced by the combination of two –non poisonous material.
In certain texts visha dravyas are classified as –
Mahavisha-It includes dravya with high toxic potency
Upavisha-It includes dravya with less toxic potency.
Sthavar Visha Adhisthana-
There are 10 types of adhisthana explain ed in text for sthavar visha-
Jangama Visha Adhisthana-
There are 16 adhisthana explained in text for Jangama Visha.