Tag: narrow therapeutic index

26 Jan
FDA Bioequivalence Standards for NTI Drugs: What You Need to Know

Medications

FDA Bioequivalence Standards for NTI Drugs: What You Need to Know

The FDA enforces stricter bioequivalence rules for narrow therapeutic index (NTI) drugs like warfarin, phenytoin, and digoxin. Learn why these drugs need tighter limits, specialized testing, and how they differ from regular generics.

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24 Jan
Warfarin and Generic Switching: What You Need to Know About INR Monitoring and Safety

Medications

Warfarin and Generic Switching: What You Need to Know About INR Monitoring and Safety

Switching from brand-name warfarin to a generic version can be safe - but only with close INR monitoring. Learn why even small changes in formulation matter, how to avoid dangerous bleeding or clots, and what steps to take before, during, and after a switch.

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