The use of European Field Elm (Ulmus minor) to support the mucus membranes is primarily based on traditional herbal practices rather than strong scientific evidence. In European folk medicine, various elm species, particularly the closely related Slippery Elm (Ulmus rubra), have a longstanding history of use for soothing irritated mucous membranes of the throat, digestive tract, and urinary system. This is largely attributed to the mucilage content in the inner bark, a gel-like substance that can coat and soothe surfaces it contacts. While most modern references and clinical studies focus on Slippery Elm, there are historical records indicating that the inner bark of European Field Elm was used similarly in some regions, especially before the widespread recognition of Slippery Elm in commerce.

However, it is important to note that scientific studies specifically examining the efficacy of European Field Elm for supporting mucus membranes are lacking. Most available research and regulatory recognition pertain to Slippery Elm, which is native to North America. The traditional use of European Field Elm for mucous membrane support relies on its similar botanical properties, particularly the presence of mucilage, but direct clinical validation is minimal. Therefore, while the use of European Field Elm in this context is justified by tradition, the evidence base is limited and should not be conflated with the more robust historical and emerging scientific support for its North American counterpart.