A client with peptic ulcer disease receives a new prescription for cimetidine. Which statement provided by the client requires additional instruction by the nurse?

A) Monitor for any signs of sexual dysfunction: Cimetidine has anti-androgenic effects. It can cause gynecomastia (breast swelling) and erectile dysfunction in men, which should be monitored. B) Decrease cigarette use to a pack per day: This statement requires additional instruction because the goal for a client with peptic ulcer disease (PUD) is to stop smoking entirely, not just reduce it. C) Notify the healthcare provider of lethargy: In some patients—especially the elderly or those with renal impairment—Cimetidine can cross the blood-brain barrier and cause CNS side effects like confusion, lethargy, or hallucinations. D) Take the medication an hour after antacids: Antacids can interfere with the absorption of Cimetidine. They should be spaced out, typically taking the antacid 1 hour before or after the Cimetidine.