Go natural with Tom's Of Maine Toms Sprmnt Ff Tthpst (6x5.5 OZ). At Tom's of Maine that means we use authentic natural ingredients. We use zinc citrate sourced from zinc - a naturally occurring mineral and xylitol, a natural ingredient derived from birch trees or corn. Plus, natural flavoring for a taste that will make you look forward to brushing! Fluoride-free formula: Some people do not want fluoride in their toothpaste. We produce this toothpaste without fluoride because we respect our customers' diverse needs and interests.. (Note: Description is informational only. Please read the ingredient label on the product for more information and always consult your health professional with any questions prior to use.)