Peppermint oil is commonly used in oral care products and is Generally Recognized as Safe (GRAS)1 for both the US FDA and the Flavor and Extract Manufacturers Association (FEMA).
Tom’s of Maine recognizes that no two people are alike, and even with naturally derived ingredients, some individuals may develop an allergic reaction that is unique to them. As with any product, be sure to discontinue use if you experience discomfort or other indications that the product may not be appropriate for your individual body chemistry.
121 CFR 182.20