Is it normal for this stuff to hurt my mouth when I use it?

(by ConsumerSearch.com) In a major comparative roundup, this toothpaste beat out 38 other brands for overall cleaning ability, bacterial inhibition and fluoride release. While some consumers dislike the baking soda and peroxide combination, others find the taste and texture particularly appealing. This toothpaste does not contain triclosan, the ingredient in Colgate Total that has been proven to fight gingivitis, but it does help fight tartar build-up.