Re: memory and pharmacy
practice!
Seriously though, we can't be expected to remember everything - that's why we have such a large array of books and texts in the pharmacy as a requirement!
A lot of my otc counselling leads me on to a group of 'favourite' drugs to recommend to patients in each therapeutic area - you'll develop your own favourites with experience over time - gradually you'll become familiar with the vast majority of otc drugs and otc counselling advice.
I often joke (like homer simpson) that my memory's now full, and every time i learn something new something old falls out of my head...
“It's not worth doing something unless you were doing something that someone, somewhere, would much rather you weren't doing.”
Terry Pratchett