"Arnica" is a medicinal plant known for its anti-inflammatory and pain-relieving properties, primarily used topically. The Arnica montana flower contains helenalin, a compound that helps reduce swelling, ease muscle soreness, and promote circulation. It is widely used in creams, gels, and homeopathic preparations for bruises and minor injuries. While arnica provides natural relief for inflammation and skin discoloration, it should not be ingested due to potential toxicity, making topical use the safest and most effective application.