Tag: narrow therapeutic index

Pharmacy

15 Jan, 2026 9

Pharmacist Concerns About NTI Generics: What Every Healthcare Provider Needs to Know

Pharmacists are raising alarms about NTI generics-medications like warfarin and levothyroxine where small changes in dosage can cause serious harm. Here’s what’s really happening behind the scenes.

Pharmacy

16 Dec, 2025 11

State Laws on NTI Substitution: Varying Requirements Across the US

State laws on NTI drug substitution vary widely across the U.S., with 27 states restricting generic swaps for medications like warfarin, levothyroxine, and lithium due to safety risks. Learn how each state handles it-and what you need to know.