Prior authorization for NTI drugs often blocks access to brand-name medications despite their narrow safety margin. Learn why insurers require these steps, how they impact patients, and what’s changing in 2025 to protect those on critical medications.
READ MORENarrow therapeutic index drugs require precise dosing-small changes can cause serious harm. Learn how to safely manage medications like warfarin, lithium, and levothyroxine with regular monitoring and consistent use.
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