Drug formulation refers to the process of designing and developing a dosage form that contains an active pharmaceutical ingredient (API) to deliver the drug to the body in a safe and effective manner. It involves the selection of appropriate excipients, the determination of the optimal drug concentration, and the selection of a suitable dosage form such as tablets, capsules, creams, or injectables, among others. The aim of drug formulation is to achieve a product that can be easily administered and efficiently absorbed by the body to achieve the desired therapeutic effect. Two important keywords in the context of drug formulation are “pharmaceutical excipients” and “bioavailability”, as these factors play a crucial role in the development of safe and effective drug products.