Review title is Terrible allergic reaction [SEP] I’ve dont have any known allergies nor have I had an allergic reaction to any other oral care products over the years, I also don’t have any know oral health “issues” I simple bought this to strengthen enamel and whiten teeth. But after using it the night before I woke up with a scary swollen mouth, tongue, cheeks, gums and lips. Be very careful with this product, use a small amount to test before rinsing your entire mouth like you normally would.