Tag: narrow therapeutic index
Therapeutic Failures: When Generic Drugs Don't Work as Expected
Posted by Ellison Greystone on Jan, 24 2026
Generic drugs are supposed to work just like brand-name versions, but when they don’t, the results can be dangerous. Learn why some generics fail, who’s at risk, and what to do if your medication stops working.
Multiple Manufacturers: NTI Drugs and Switching Between Generics
Posted by Ellison Greystone on Jan, 1 2026
NTI drugs like levothyroxine and tacrolimus have a narrow safety margin, making generic switches risky. Even FDA-approved generics can cause dangerous fluctuations in blood levels. Learn why switching manufacturers matters - and how to protect yourself.