The future of dental care: The phrase on the toothpaste tube "please do not swallow" is a thing of the past for us. We replace the questionable fluoride in conventional toothpastes with the NASA-tested micro-mineral calcium hydroxyapatite (HAp). This biocompatible ingredient effectively helps to remineralize the teeth and is completely harmless to the body. Facts: Excessive consumption of fluoride in toothpaste can lead to dental fluorosis, gastrointestinal complaints, impairment of the cognitive system and, in rare cases, poisoning. For this reason, many toothpastes warn against swallowing toothpaste and to consult a doctor in the event of excessive consumption. With Natch, this is no longer a problem.