IMPORTANT MESSAGE REGARDING COVID-19: During this time of great uncertainty, we want to assure you that Diem is taking all necessary measures to protect you, our employees, and our community. As a Michigan-based company, we are now governed by state and federal directives designed to protect the health and safety of us all. At Diem, our on-site staff has been limited and those remaining are outfitted with personal protective equipment. We have instituted strict sanitation protocols, and we are closely monitoring individual wellness to protect you and the entire Diem family.

US DOMESTIC CUSTOMERS: To help offset possible Postal delivery delays, we now offer UPS Ground service as an option for shipping during checkout. This service is available for customers within the contiguous United States. Please be aware that this option does require payment of actual shipping charges at the time of purchase. Charges will vary depending on the destination and weight of the package.

Questions? Click here to email or contact customer service Monday-Friday at 888-876-5765.

What is xylose isomerase?

Xylose isomerase is an enzyme that catalyzes the conversion of fructose to glucose, and vice versa. Ironically, it is used commercially to convert glucose into fructose to create such things as high fructose corn syrup (HFCS). Umbrellux® XI harnesses the power of glucose isomerase to help convert that fructose back to glucose, helping the body maintain optimal sugar metabolism and protecting against the damaging effects of our high fructose diets.