Which of the following is an example of a parenterally administered medication?

Parenterally administered medications are those that are delivered directly into the body, bypassing the gastrointestinal tract. This method includes various types of injections, such as subcutaneous, intramuscular, and intravenous routes.

Subcutaneous injections involve delivering medication into the layer of fat and tissue just under the skin. This method is commonly used for medications that need to be absorbed slowly over time, such as insulin or certain vaccines. Since this option directly administers the medication into the body without involving the digestive system, it exemplifies parenteral administration effectively.

In contrast, oral tablets are ingested and absorbed through the gastrointestinal tract, making them enterally administered. Rectal suppositories are also considered enteral since they are absorbed via the rectum into the digestive system. The mention of "intramuscular pill" is misleading, as pills are not generally administered intramuscularly; medications in this format are typically delivered via injection.