NTI drugs like levothyroxine and phenytoin require strict consistency to avoid life-threatening side effects. Yet many insurers still force patients through prior authorization to get the brand-name version they need - even when generics aren't safe substitutes.
Doctors rarely prescribe brand-name drugs only - but when they do, it's usually because your health depends on it. Learn why generics aren't always enough and when brand-name medication is medically necessary.