Which of the following is NOT classified as a solid medication?

The correct choice, which indicates that an aqueous suspension is not classified as a solid medication, is based on the nature of the medication forms.

Solid medications are typically defined by their physical state, which allows for them to maintain a fixed shape and volume without requiring a container. Capsules, lozenges, and tablets all fall into this category, as they are formulated as solids that can be swallowed, dissolved, or melted in the mouth.

On the other hand, an aqueous suspension consists of solid particles dispersed throughout a liquid medium. This form does not maintain a fixed shape and is considered a liquid preparation, which is distinct from solid medications. This fundamental difference in physical state categorizes aqueous suspensions separately from solids, making the choice of C the correct response. Understanding the various forms medications can take is crucial for proper administration and patient education.