What kinds of effects can be produced by drug action?

• A. Desirable and undesirable
• B. Therapeutic only
• C. Toxic only
• D. Mild and severe

Answer: (A)

Drug action can produce both desirable and undesirable effects. A medication may provide therapeutic benefits—relieving symptoms, curing, or preventing illness—at the right dose, but it can also cause adverse effects, ranging from mild side effects to toxicity, especially at higher doses or in susceptible individuals. That dual потенциал is why the best description is that drug effects include both desirable and undesirable outcomes. The other options miss this full picture: focusing only on therapeutic effects ignores possible harm; focusing only on toxicity ignores beneficial actions; and describing effects as mild or severe talks about intensity, not the types of effects a drug can produce.