Humic acids are mixtures of complex macromolecules derived from the decomposition of organic material and are found in soils and peats. They have been used topically, usually as sodium humate, for musculoskeletal and joint disorders. They also have industrial applications.

Ger.: Leukona-Sulfomoor-Bad F†; Rheumasan Moor-Bad S†. Multi-ingredient: Austria: Humal; Leukona-Sulfomoor-Bad†; Salhumin; Ger.: Salhumin Rheuma-Bad; Salhumin Sitzbad N†; Salhumin Teilbad N†.