Is giving 1 tylenol pm for pain and help to rest ok?

Read the information leaflet in the box. Follow its advice for older people.

But if your mother is having arthritic pain in her shoulder, you're expecting rather a lot of one little ol' Tylenol tablet. It won't do much. Has your mother consulted a doctor about this problem?

For immediate purposes, assuming it's the middle of the night with you, she might find a VERY well-wrapped heat pad or hot water bottle soothing. Make absolutely sure no hot surface comes into direct contact with her skin, you're aiming for gentle warmth.

Agree with lealonnie, especially if she's on any other medications.

You'd have to run that question by the doctor involved to get a proper answer. We are just a forum care givers sharing stories and ideas and tips with one another; we are not qualified to give advice on which medicines are safe to give an elder!

Good luck!