This document provides an introduction to different dosage forms. It discusses how drugs are administered through various dosage forms after being converted into suitable formulations. Solid dosage forms are one of the oldest and most common, including unit dosage forms like tablets, capsules, pills, and powders. These solid forms provide accurate dosing and protection for drugs. Excipients are added to solid dosage forms to give them shape and stability and make them more palatable. Some solid dosage forms are supplied in bulk quantities while others are unit doses. Common solid dosage forms include tablets, capsules, granules, and various powders for internal or external use.