This document provides an overview of the Ayurvedic concept of anupana, or substances consumed along with food or medicine. It begins with definitions of anupana and discusses its etymology and history of inclusion in Ayurvedic texts. It then describes different types of anupana and factors to consider when selecting one, such as dosage, timing of administration, and indications and contraindications. The document outlines various actions of anupana including as an adjuvant, vehicle, digestant, and synergist. It provides examples of common anupana used with different formulations and single drugs. In conclusion, it discusses some research points regarding how anupana may improve digestibility and absorption.