I was recently found to have atrial fibrillation so severe that my heart had to be restarted. I vowed to never drink coffee again, but well, life gets stressful, so I would take a sip of my hubby's coffee from time to time. When I had to go back to the ER to have my heart restarted twice in a day, I finally quit for good. Teeccino is the only thing that makes me feel that I am not giving up one of my favorite "vices". I've just replaced coffee with something better and have been turning my friends on to it ever since. Best flavor IMHO: Maca Chocolate.