What is a vial?

A vial is specifically defined as a sealed container used for storing medications or other substances. Vials are typically made of glass or plastic and are designed to preserve the sterility and stability of their contents. They come with rubber stoppers that allow for the withdrawal of the product using a syringe without compromising the integrity of the vial's contents. This sealed environment is crucial for maintaining the effectiveness of the medication and preventing contamination.

In contrast, a large bag for IV fluids is used for administering fluid therapy but does not fit the definition of a vial; similarly, a device for injection refers to instruments like syringes or auto-injectors, which are used to administer medications but are not meant for storage. Lastly, a type of syringe refers specifically to the device used for drawing up and dispensing liquids, which again does not align with the characteristics of a vial. Therefore, the definition and function of a vial as a sealed container for medication highlight its unique role in pharmacy science.