Arnica contains several chemical compounds with anti-inflammatory or counter-irritant properties, which help relieve minor pains. It is currently being investigated for possible pain relief for arthritis. Arnica products for external application are readily available in Canada and used widely in Europe.
However, arnica is also a highly poisonous plant. In Canada, products containing arnica cannot be marketed for internal use, and arnica should not be applied to injured areas if the skin is broken.
Coalition of Canadian Healthcare Museums and Archives
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