This is a great topic.
I try to stay away from any pain relief meds. They just hide the problem and there are side effects with all of them. If I'm hurting, I want to feel the pain - not mask it. I will take an Aleve after a round, if I need it, to 'recover'.
My lower back hurts and my left knee seems to be 'blown out'. I will take some time away from the course, rather than load up on pain killers and play tomorrow. Playing with an injury will just make the pain worse - in the long run.
I'm looking forward to playing again in '19.