Reviews for Intoleran US are consistently positive. Customers appreciate that the products are effective in managing food intolerances and improving quality of life. Many also value the convenience of use, flexible dosing, and the variety of product options available for different intolerances, as well as ongoing product development. Fast shipping and prompt delivery are frequently praised, and the customer service is often described as responsive, helpful, and knowledgeable. Some customers find the products to be expensive and wish they were more affordable, particularly for those who need them regularly or in higher doses. While delivery is usually fast, a few customers have experienced delivery issues or delays. There are also occasional frustrations with reaching customer support.