Tag: narrow therapeutic index

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Cyclosporine and Tacrolimus Generics: What Transplant Patients Need to Know About Bioequivalence and Switching Risks

Generic cyclosporine and tacrolimus save money but carry serious risks for transplant patients due to narrow therapeutic ranges. Learn why switching brands can cause rejection or toxicity - and how to protect yourself.

Soren Fife, Jan, 21 2026

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NTI Drug List: Common Medications with Narrow Therapeutic Windows

NTI drugs have a tiny margin between safe and toxic doses. Common examples include warfarin, lithium, digoxin, and tacrolimus. These require strict monitoring, careful dosing, and often no generic substitutions. Learn which drugs are in this high-risk category and how to stay safe.

Alex Lee, Jan, 13 2026