What is a suppository typically composed of?

A suppository is specifically designed to be inserted into the body, where it dissolves or melts at body temperature, allowing the medication to be absorbed through the rectal, vaginal, or urethral walls. The typical composition includes a base that usually comprises cocoa butter or similar materials that solidify at room temperature but liquefy when exposed to body heat. This characteristic is essential as it facilitates the release of the medication right where it needs to be effective.

In contrast, a gel that remains solid at room temperature does not have the properties required for a suppository, as it would not melt appropriately to release the medication. Tablets intended for oral administration are designed for ingestion and absorption through the digestive tract, thereby differing significantly in formulation and intended use from suppositories. Lastly, liquid medications for injection are formulated for direct delivery into the bloodstream or tissue, which is entirely different from the suppository's method of absorption through mucous membranes. Thus, the composition of a suppository being a medication in a cocoa butter base that melts at body temperature is what makes it effective and suitable for its intended purpose.