Theophylline helps control asthma and COPD, but its narrow therapeutic window means even small changes in dosage can cause toxicity or treatment failure. Regular blood monitoring is essential to stay safe.
Generic drugs aren't always interchangeable with brand-name versions. When they fail, it can lead to serious health risks-especially for critical medications. Learn why some generics don't work and what you can do.
Expired medications with a narrow therapeutic index can be life-threatening. Even small changes in potency can cause serious harm. Learn which drugs are most dangerous after expiration and what to do if you're taking one.
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