I’ve been a long time Parodontax user but came across this product and noticed it’s slightly cheaper for the amount of oz you get compared to purchasing a set of Parodontax. What I didn’t like about this toothpaste is that it leaves a residue on your teeth and tongue after brushing, but was told this is a good thing from my dentist. The toothpaste foams up immediately, coating the crevices of my gums and teeth, making it more effective and far more superior than other leading brands. The residue taste is something you get used to with additional use. I got used to it by day two.I brush my teeth after every meal and am pleasantly surprised by how clean my mouth feels at the end of every use. I don’t have COVID-breath while mask wearing anymore.I highly recommend this product for those with periodontitis.