Mr. H., who is 89 years old, comes in with a complaint of knee pain. He says to you "you think this might be arthritis?" Mr. H. has a 2 pk/day smoking history for 69 years. Other than that he has no medical diagnoses and is on no routine medications. The advanced practice nurse knows that the most appropriate medication to use for control of Mr. H.'s osteoarthritic pain is which of the following?