Narrow therapeutic index (NTI) drugs walk a fine line — just like adding the perfect amount of spice to your favorite dish. A little too much, and the result can be harmful; too little, and it might not work at all. Medications like digoxin and warfarin require exact dosing and careful monitoring because even small changes can lead to serious side effects. In this blog, we break down what NTI drugs are, why they need special care, and how thoughtful practices – from regular check-ups to reliable sources like SayaCare – can make all the difference in using these powerful medicines safely.