In homoeopathic potency, Arnica montana acts on the muscular system of the body. It relieves muscle strain from overuse and muscular pain associated with injury. It helps treat bruising by aiding the absorption of blood from muscle and affected tissue.
Homoeopathic Arnica montana also has an anti-swelling and anti-inflammatory action which helps reduce pain. It is useful post-operatively and in recovery from physical trauma. It also has a useful application in treating shock associated with trauma.