arnica

arnica /ar·ni·ca/ (ahr´ni-kah) the dried flower heads of the composite-flowered species Arnica montana; preparations are used topically for contusions, sprains, and superficial wounds, and as a counterirritant.

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arnica (rˑ·ni·k),

n Latin name:
Arnica montana L.; part used: flowers; uses: antiinflammatory, antimicrobial, antiecchymotic, analgesic, bruises, strains, sprains, muscle aches, varicose veins, hemorrhoids, insect bites, dandruff, baldness; precautions: patients with open wounds; can cause contact dermatitis, eczema, toxic if ingested (unless at homeopathic dosages).