"Drug response" refers to how an individual's body reacts to a medication. This response can vary widely among people due to factors such as genetics, age, weight, and overall health. Some may experience the desired effects, while others might have side effects or no effect at all. Understanding drug response is crucial for effective treatment. Healthcare providers often consider these variations when prescribing medications, aiming to tailor treatments to each patient's unique needs. This personalized approach can improve outcomes and minimize adverse effects, making it an essential aspect of modern medicine and pharmacology.