Which of the following is not categorized as a nonparenteral medication?

To determine which option is not categorized as a nonparenteral medication, it's important to define the term "nonparenteral." Nonparenteral medications are those that are administered through routes other than injections. This includes forms that can be absorbed through the digestive system, skin, or respiratory pathways.

Oral tablets are a classic example of a nonparenteral medication, as they are taken by mouth and absorbed through the gastrointestinal tract. Topical creams are also nonparenteral because they are applied directly to the skin for local effects, while inhalers deliver medication through the respiratory system, allowing for absorption via lung tissues.

In contrast, intravenous (IV) solutions represent a parenteral route, as this method involves administering medication directly into the bloodstream through an injection. This delivery method bypasses the digestive system entirely, making it distinct from nonparenteral medications. Thus, IV solutions are correctly identified as the option that does not fall under the category of nonparenteral medications. This distinction is crucial for understanding how different medications are delivered and their respective pathways through the body.