Indicated for Bruises, Boils, Jet lag. Arnica montana is a homeopathic remedy commonly used for bruises and muscle soreness. It's actually made from a plant that has been used for centuries in folk medicine to treat the effects of accidents and injuries. The name refers to the genus and species of the yellow flowering plant, which is endemic to the mountains of Central Europe, commonly called Leopard's Bane or Mountain Daisy. The homeopathic remedy is made from this plant. Active ingredient: Arnica montana [HPUS]. Inactive ingredient: Alcohol.