Final answer:
For a client on metoprolol with a headache, the nurse should recommend acetaminophen (Tylenol) due to its lesser side effects compared to NSAIDs like aspirin, ibuprofen, and naproxen.
Step-by-step explanation:
The nurse should reinforce the health care provider's instructions for a client newly prescribed metoprolol who has a headache to take acetaminophen (Tylenol). This recommendation is due to the fact that acetaminophen is known for having fewer side effects compared to other non-steroidal anti-inflammatory drugs (NSAIDs) like aspirin (Bayer), ibuprofen (Advil), and naproxen (Aleve). While effective for pain and fever, NSAIDs can lead to gastrointestinal issues, as well as potential heart and kidney concerns, making acetaminophen a safer choice for symptom relief in combination with metoprolol.