What is the standard therapeutic blood level range for theophylline?

The standard therapeutic blood level range for theophylline is established to ensure its effectiveness while minimizing potential toxicity. A range of 10 to 20 mcg/mL is considered optimal for achieving therapeutic effects such as bronchodilation in patients with respiratory conditions like asthma or chronic obstructive pulmonary disease (COPD). Below this range, insufficient therapeutic effects may be observed, while levels above this range can lead to adverse effects, including nausea, vomiting, arrhythmias, and seizures. Maintaining theophylline levels within this specified range is crucial for patient safety and treatment efficacy.