A 56-year-old male client with a recent diagnosis of erectile dysfunction has been prescribed ...

A 56-year-old male client with a recent diagnosis of erectile dysfunction has been prescribed sildenafil citrate (Viagra). In conducting client education, which of the following teaching points should the nurse provide to this client?
 
  A) It will likely take 2 to 3 weeks before you begin to see a difference in your erectile response.
  B) Make sure that you don't take Viagra more than once each day.
  C) You will likely get an erection around 30 minutes after you take Viagra and it will subside after a few hours.
  D) If your erection lasts more than 24 hours, seek medical attention.