NSAIDs reduce inflammation. Since inflammation is part of healing, they can slow recovery, but they’re useful when inflammation itself is a problem.

paracetamol is not an NSAID.

Yes, but since the parent was talking about drugs with similar effects slowing healing, I thought it was appropriate to mention.

True but one of the proposed mechanisms of action is on the same pathway as NSAIDs

You are right COX-1/2 difference