Yeah a high does of caffeine and unfortunately cigarrettes or vaping gives me better speech. I wish this wasn't the case so that I wouldn't be addicted to friggin nicotine. But these things seem like the only minor relief for me. DONT START SMOKING! tho because it's not solution at all. But I've read articles/studies where they say things that raise Dopamine help speech. Then I read other articles & studies that say the exact opposite. Who the hell knows anymore.. All I know is personally when I consume things that lower dopamine like alot of weed or alcohol my speech usually gets worse. Granted I don't over think & don't get blocked usually but I notice my overall speech gets worse. So I think maybe there's a correlation here. Maybe some stutterers do better with downers & some with stimulants. Who knows.