Compressed tablets are the most common pharmaceutical dosage form. They can be made in almost any shape, although requirements of patients and manufacturing mean that most are round, oval or oblong-shaped. Sometimes also referred to as pill or caplet, a tablet can be formulated to deliver an accurate dosage to the human body. While some APIs may be tableted as pure substances, most formulations include a pharmacologically inactive ingredient (exipient) to help hold the tablet together and give it strength. Typically a disintegrant is added to aid tablet dispersion once swallowed, releasing the API for absorption.