A male client reports to the on-call nurse that he took tadalafil 10 mg by mouth two hours ago and his skin now feels flushed. He reports a history of stable angina, but denies experiencing any current or recent chest pain. Which action should the nurse take?

Instruct the client to increase his intake of oral fluids until the skin flushing is relieved.

Advise the client to place one nitroglycerin tablet under his tongue as a precaution.

Tell the client to have someone bring him to an emergency department immediately.

Reassure the client that skin flushing is a common side effect of the medication.