Zoloft / Sertraline boosts dopamine slightly, not as much as Prozac does. Prozac also boosts norepinephrine too. It’s really just trial and error to see which one works better for you as we are all different, and respond differently to different SSRI meds. Some people here have had success with Zoloft whereas others have not. Prozac made my stutter worse on a higher dose, so I’ve switched to Lexapro recently. I’ll see how it goes over the next few weeks.