Which of the following is defined as any effect of a drug other than the intended therapeutic effect?

The term that defines any effect of a drug other than the intended therapeutic effect is side effects. Side effects are often secondary actions that occur along with the primary effect of a medication. They can be mild or severe, but they are not typically the reason a medication is prescribed. Understanding side effects is crucial in medication management as they can impact patient adherence to treatment or necessitate adjustments in dosage or therapy.

Adverse reactions, while related, refer specifically to harmful or undesirable effects that may occur due to a drug’s action, distinguishing them from more neutral side effects. Secondary effects can be considered a broader category that may include side effects but does not specifically capture their unintended nature. Complications usually refer to complications from a disease or condition rather than directly to the effects of a medication.

Recognizing the specific definitions helps in understanding the broader context of pharmacology and patient care management.