What is the main concern when a drug is outside its therapeutic range?

When a drug is outside its therapeutic range, the primary concern is the increased risk of side effects and toxicity. The therapeutic range represents the concentration of a drug in the bloodstream that provides effective treatment while minimizing adverse effects.

When drug levels are too low, it may lead to insufficient therapeutic effect, meaning the intended outcome of the treatment may not be achieved, which could worsen the patient's condition. Conversely, if drug levels are too high, there is a heightened risk of toxicity and side effects, which can lead to serious health complications.

Maintaining drug levels within the therapeutic range is crucial for ensuring safety and effectiveness, which underscores the importance of monitoring drug dosages and patient responses. Thus, understanding the implications of being outside this range is essential for safe pharmacological practice.