My Mother was getting to be like that near the end. Some days were great... some days were... let's just say that some days were a challenge.
I had to stop by the pharmacy and tell them to stop putting the drug fact sheets in with her prescriptions. They agreed when I explained why I was asking...
Mom would get those with her prescription each month and would sit and read them word for word... and when she got to the "dangers, interactions, adverse effects" section she would absolutely lose her *expletive deleted*it.
OH MY GOD! THIS CAN CAUSE DEATH! I'M NOT TAKING THIS! I'M CALLING MY DOCTOR AND TELLING HIM TO GO TO HELL FOR GIVING ME THIS!
Well, Mom, you've been taking that drug for the last 15 years and it's why you're not already dead from congestive heart failure.
BUT THIS MIGHT CAUSE DEATH! I'M NOT TAKING IT!
You stop taking it and you WILL die, Mom. End of story.
Each month was like that. The best I could hope for would be to intercept her prescriptions and grab the sheets and toss them, but if I wasn't there it was a really big problem.
Once she got her hands on them it would be an all day circus.