A male client reports to the on-call clinic 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?

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

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

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

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