A nurse in a clinic is talking with a client who has a new diagnosis of osteoarthritis. The nurse should anticipate that the client will require teaching about which of the following medications?

Choice A rationale Acetaminophen (Tylenol) is typically the first-line medication recommended for the management of mild to moderate pain associated with osteoarthritis (OA). It works by inhibiting prostaglandin synthesis primarily in the central nervous system, providing analgesic effects without the anti-inflammatory or gastric side effects often seen with NSAIDs, making it the preferred initial treatment choice. Choice B rationale Celecoxib is a selective COX-2 inhibitor, a type of Non-Steroidal Anti-Inflammatory Drug (NSAID) often reserved for clients whose pain is not adequately controlled by acetaminophen or who have moderate to severe inflammation. While it is used for OA, it is usually not the first-line drug due to potential cardiovascular risks. Choice C rationale Cyclobenzaprine (Flexeril) is a centrally acting skeletal muscle relaxant used primarily to treat muscle spasms, often associated with musculoskeletal conditions like back pain. While pain and muscle tension can accompany OA, it is not a core treatment for the joint pain, stiffness, and structural changes characteristic of osteoarthritis. Choice D rationale Ibuprofen is a non-selective NSAID used to manage pain and inflammation in OA. Although effective, it is generally considered a second-line treatment behind acetaminophen due to its greater potential for gastrointestinal side effects (e.g., ulcers, bleeding) and renal toxicity, especially with long-term use in the older population typically affected by OA.