Arnica Cautions

Contraindications:

"Do not continue topical use if the preparation causes a rash. Do not use topically

   at the same time you are using aromatic balms or DMSO, or if the skin is seriously

   abraded. Do not use internally if you are pregnant, have chronic intestinal

   inflammation, or have any overt disease involving blood vessels, blood clotting,

   heart function, the liver or the kidneys."    Ref. B p.51,

   "POISONOUS: can be toxic if taken internally. Repeated external use may cause

    skin irritation."    Ref. D p. 157