21. Eight types of inappreciable persons; 22. Lightening and nourishing therapies; 23. Refreshing regimen; 24. Blood purification and the regimen, therefore; The above mentioned four chapters constitute the tetrad on therapeutics.
25. Origin of man and his diseases; 26. Discourse among Atreya, Bhadrakapya, etc. 27. Properties of diets and drinks; 28. Various types of diets and drinks; The above mentioned four chapters constitute the tetrad on dietetics.
Thus, the Sutra Sthana constitutes of seven tetrads (each containing four chapters) on drugs, maintenance of positive health, physicians including medicines, etc., therapeutics measures, diseases, some of the fundamental pillars of health management – medicines, physicians, therapeutics, and dietetics are described consecutively.
The first section, as well as the entire treatise, is summarized in the last two chapters. Thus, the first section of thirty chapters is very important.