Contents: 1. Introduction of Agadtantra. 2. Visha. 3. Mythological origin and Panchabhautika concept of Visha. 4. Visha Pareeksha. 5. Classification of Visha. 6. Concept of Gara. 7. Dooshivisha. 8. Sthavara Visha. 9. Visha Vegas. 10. Sthavara Visha Chikitsa. 11. Chaturvimshati Upakramas. 12. Sarpa. 13. Keeta Visha. 14. Vruschika. 15. Lootha Visha. 16. Mooshika Visha. 17. Alarka Visha. 18. Madaatya. 19. Food poisoning. 20. Viruddhara. 21. Air pollution. 22. Water pollution. 23. Land pollution. 24. Toxicology. 25. Poisons. 26. Mechanical irritant poisons. 27. Metallic poisons. 28. Special Agadas.