Narrow Therapeutic Index Drugs: Stricter Bioequivalence Requirements Explained
Jan 16 2026
Clinical Outcomes After NTI Generic Switches: What Studies Show
Studies show that switching to generic versions of narrow therapeutic index (NTI) drugs like warfarin, phenytoin, and cyclosporine can lead to dangerous fluctuations in blood levels. Learn what the evidence says about clinical outcomes, risks, and how to protect yourself.
