Which of the following is NOT one of the possible outcomes of medication use?

The correct choice identifies "Extended effect" as not being a recognized outcome of medication use. When medications are administered, there are typically four main possible outcomes: the desired effect, side effects or adverse reactions, no effect, and sometimes an unexpected effect.

The desired effect refers to the intended therapeutic response that the medication is meant to achieve. Side effects or adverse reactions are unintended responses that may occur alongside the desired benefits. No effect denotes a scenario where the medication fails to produce any observable impact on the patient's condition, indicating that the medication was ineffective in that situation.

In contrast, "extended effect" is not commonly categorized as a standard outcome in pharmacology. While a medication may have a prolonged duration of action or persistent effects, these are typically communicated through terms like "prolonged effect," but this is not a recognized category of outcome in the same way as the others mentioned. Thus, acknowledging the terminology used in pharmacology is key, and "extended effect" does not fit within the standard framework of medication outcomes.