No other medicinal plant is as popular among young and old as arnica. Although it has become rare in nature, many are familiar with it in the form of ointments and compresses, as globules or drops. This book showcases the medicinal plant arnica in its natural habitats in the mountains and forest clearings, describes its botanical features, and its use in folk medicine, phytotherapy, and homeopathy, supplemented by remarkable new approaches from the field of anthroposophical medicine. It becomes evident that arnica not only helps with injuries and joint complaints but can also be a genuine alternative in the modern treatment of multiple sclerosis, contributes to comprehensive healing after a stroke, and has proven effective in emergency medicine as well as in the treatment of heart diseases. With its help, not only strains but also serious muscle injuries can be treated.