Major depressive disorder

Thomas is a 28-year-old who presents to the clinic with signs and symptoms consistent with major depressive disorder.  He is concerned about starting an antidepressant because one of his friends recently experienced erectile dysfunction while on an antidepressant. Which of the following would be the most appropriate antidepressant to start Thomas on?

1. Vilazodone

2. Sertraline

3. Paroxetine

4. Citalopram