What is the main characteristic of a troche?

A troche is defined as a small, often disk-shaped medicinal tablet that is designed to dissolve in the mouth. The primary characteristic of a troche is its ability to release medication as it dissolves, allowing for localized effects or systemic absorption through the mucous membranes in the mouth and throat. This makes it particularly useful for conditions affecting the throat or for delivering drugs that need to act quickly, as absorption occurs directly into the bloodstream without the need for swallowing.

When considering the other options, the liquid form mentioned does not apply to a troche since it is a solid dosage form that does not require swallowing like traditional liquids. A troche is not an injection, which involves delivering medication via a needle into the body. Lastly, while some medications can be taken with food, it is not a defining characteristic of a troche, as it is specifically designed for oral dissolution rather than being consumed with food. Thus, the focus remains on its unique formulation that allows for dissolution in the mouth.