Arnica is a very frequently used topical herbal medicine. It is believed to assist healing from bruising, sprains and external local healing (excluding open wounds). In addition, arnica can be used to treat tired, overworked muscles. A 2003 Norwegian study showed that marathon runners who applied skin prior to an event experienced significantly less pain and stiffness after the race.
Arnica montana (also known as leopardsbane or wolfsbane) is a yellow-flowed aromatic herbaceous perennial which is native to southern Russia and other mountainous areas in Europe. The flowers of the Arnica plant contain sesquiterpene lactones, chemicals that are proven to reduce inflammation and decrease pain. Arnica appears to reduce bruising by stimulating the white blood cells to disperse any trapped blood and fluid from the injury site.
Arnica’s effectiveness as a herbal medicine for bruising, sprains, and inflammation is well established and many commercial creams used for treatment of pain, bruising, and swelling contain arnica as an active ingredient.
Arnica creams and gel can also be used to treat the symptoms of from other conditions such as carpal tunnel syndrome and arthritis. Indeed a Swiss study (1) indicated that there was significant decrease in pain levels from those affected by mild to moderate osteoarthritis of the knee. The effects of delayed onset muscle soreness can also be reduced by application of a suitable Arnica product.
However, there are some safety considerations to consider before using Arnica. Firstly, Arnica should not be used during pregnancy (or as a precaution even if you’re trying to get pregnant). Secondly Arnica should not be used on broken skin, such as cuts, scrapes or leg ulcers. Finally, when used frequently or for long periods of time, some Arnica users can be affected by dermatitis or eczema. If you have any doubt, concerns or questions about the use of Arnica, then please ask your health care practitioner.