We're sorry to hear that this has been your experience, since our toothpastes have gone through many quality checks to ensure that you can enjoy the best possible results. As well, they've been thoroughly evaluated to be safe when used as directed. We'll be sure to pass this along to the rest of our team. We'd like to mention that some consumers may experience what appears to be staining of their teeth when using toothpaste with the ingredient of stannous fluoride. We do place a label on these products warning of this possibility. Additional brushing and/or a regular dental cleaning will likely remove the appearance of staining. We'd like to learn more, as well as gather some additional details for our Quality and Safety Teams. When you're able, please give us a call at (800) 492-7378 when you have a moment.