A nurse is providing teaching to a client who has erectile dysfunction and has a new prescription for tadalafil. Which of the following client statements indicates an understanding of the teaching?

A. "I should crush this medication if I have difficulty swallowing": Tadalafil should not be crushed. It should be taken whole to ensure proper absorption and effectiveness. Crushing the tablet could alter the medication's effect and lead to potential complications. B. "This medication can decrease my blood pressure": Tadalafil can lower blood pressure by relaxing blood vessels, which helps increase blood flow to the penis. It is important for clients to be aware of this potential effect, especially if they are also taking other blood pressure-lowering medications. C. "I can take this medication up to twice a day": Tadalafil is typically prescribed to be taken once a day for daily use or as needed, depending on the dosing regimen. Taking it twice a day is not generally recommended unless specifically instructed by the healthcare provider. D. "The effects of this medication will not last more than 4 hours": The effects of tadalafil can last up to 36 hours, not just 4 hours, which is significantly longer than other erectile dysfunction medications. This allows for greater flexibility in timing sexual activity.