What is the term for a liquid preparation consisting of solid particles dispersed in a liquid?

A liquid preparation that contains solid particles dispersed throughout a liquid is known as a suspension. In this type of formulation, the solid particles are not fully dissolved; instead, they remain suspended within the liquid, which means they can settle over time if left undisturbed. This differentiates suspensions from solutions, where solids are completely dissolved and distributed at a molecular level, creating a homogeneous mixture.

Furthermore, suspensions require proper agitation or shaking prior to administration to ensure that the solid particles are evenly distributed throughout the liquid. This is particularly important in a pharmacy setting, as the efficacy and safety of the medication can be compromised if the particles settle and are not adequately mixed before dosing.

Emulsions consist of two immiscible liquids (such as oil and water) mixed with an emulsifying agent, creating a stable blend. Mixtures can vary widely in composition and do not specify how the components interact. Therefore, the specific term that accurately describes a liquid with solid particles dispersed is indeed a suspension.