Arnica (Arnica montana) is a flowering plant commonly used in herbal medicine for its anti-inflammatory and pain-relieving properties. Native to Europe, it has been traditionally used for treating bruises, sprains, and muscle pain. Arnica is rich in flavonoids, essential oils, and sesquiterpene lactones, which are believed to contribute to its therapeutic effects. The plant is primarily applied topically as ointments, creams, and gels, offering relief from pain and swelling when applied to the skin. It can also be found in homeopathic remedies, where it is used to treat trauma, bruising, and post-surgical recovery. Despite its effectiveness, it should never be ingested in large quantities due to potential toxicity. In topical form, arnica is well-known for reducing swelling and bruising, making it a go-to remedy for minor injuries. It is also used to support joint health by improving circulation in affected areas.