This document provides information about the Ayurvedic powder preparation known as Churna Kalpana. It begins with an introduction discussing primary and secondary Ayurvedic preparations. It then discusses different author's classifications of Kashaya Kalpana, including Panchavidha described by Charaka and Sharangadhara. The definition, ingredients, and process of making Churna are explained. Various types of Churna according to sieve size and uses are mentioned. Examples of specific Churna formulations like Triphala Churna and Sudarshan Churna are also summarized along with their ingredients and indications. The document concludes by summarizing a research study on the antipyretic effects of Sudarshan