Sesquiterpenoid lactones, including helenalin and dihydrohelenalin. Also flavonoid glycosides, alkaloid, volatile oil, tannin, isomeric alcohol, including arnidio and foradiol.
An arnica is any of a variety of plants of the genus Arnica, considered to have medicinal properties.
Anti-inflammatory, analgesic, antiseptic, antibacterial properties.
Citral.
Honokiol.
Amargogentin.
Diosgenin.
Flavanoids, quercetin.
Anthraquinone glycosides.
Flavones, baicalein.
Crocetin and crocin.
Saponin, tannin, insitol.
Ascorhbic and glycolic acids.