Cloudy minds with Benadryl, Tylenol PM, etc. for sleep

My mother used to take Tylenol PM, which contains the anti-histamine Benadryl, every night, until I explained what was uncovered in the Harvard Medical Health Blog:

These drugs block the action of a neurotransmitter involved in learning and memory. There is “mounting evidence that anticholinergics aren’t drugs to take long-term if you want to keep a clear head, and keep your head clear into old age.”

And to top that, this article points out how Benadryl can cause serious hallucinations in the elderly​.