The document provides an overview of Kshara Varga (alkaline substances) in Ayurveda. It discusses the definition, etymology and classification of Ksharas. Ksharas are classified based on source (naisargika, kritrima etc.), use (internal, external), number (dvaya, trika etc.) and properties (tikshna, ushna etc.). The general properties and therapeutic uses of Ksharas are mentioned. Various classical texts referencing Ksharas are listed. The common methods of Kshara preparation involving shoshana, agni, sthapana, galana and agni steps are outlined. Seasonal variations in quality based on time of