Tag: allopurinol theophylline
Theophylline Clearance: How Common Medications Can Cause Dangerous Buildup
Dec, 27 2025
Theophylline is a powerful but risky asthma and COPD medication. Certain common drugs like cimetidine, fluvoxamine, and allopurinol can dangerously slow its clearance, leading to toxic buildup. Learn which medications to avoid and how to stay safe.