Tag: narrow therapeutic index

Doctors sometimes prescribe brand-name drugs instead of generics for medical reasons-especially with narrow therapeutic index medications. Learn when it's necessary, when it's not, and how to advocate for the right choice.

Theophylline is a powerful but dangerous asthma and COPD medication with a narrow therapeutic window. Without regular blood level monitoring, even small changes can lead to life-threatening toxicity. Learn why NTI monitoring is non-negotiable.

When a generic drug doesn't work like the brand, it's not just bad luck - it could be a systemic failure. Learn why some generics fail, which drugs are riskiest, and what to do if your medication stops working.