As the developer of certain patented formulations, Ventis Pharma has provided Nubratori RX the license to manufacture the Endura-KT formulation under its FDA 503B Outsourcing facility. Nubratori RX is a licensed FDA 503B Outsourcing Facility where all products are manufactured in the USA according to FDA CGMP regulations. Nubratori RX website is : https://www.nubratorirx.com