Tag: narrow therapeutic index

International Perspectives on NTI Generics: Regulatory Approaches Compared

International Perspectives on NTI Generics: Regulatory Approaches Compared
2 December 2025 Shaun Franks

NTI generics require stricter regulation than regular generics due to their narrow safety margin. This article compares how the FDA, EMA, Canada, and Japan handle approval, bioequivalence, and substitution rules for drugs like warfarin and levothyroxine.