Heilerde-Gesellschaft Luvos Just GmbH & Co. KG is a German manufacturer of medicinal clay (Heilerde, "healing-earth")-based products for both internal and external application.

[9] During production, Luvos Heilerde is first dried, then sterilized at 130 °C (266 °F), and subsequently milled to achieve different fineness grades.

[citation needed] The three coarsest grades of Luvos—"1" (fine), "2" (coarse; external use), and "ultra-fine" (for children and those having weakened constitutions)—have been in production since the time of Just.

In August 2010, an even finer grade, "micro-fine", was introduced, which is supposed to bind excess cholesterol and bile acids.

[10] In 2004, 90% of company revenue came from Germany, the rest was made with exports, primarily to Austria, Switzerland, Italy, Scandinavia, and America.