Best used for chronic pain.
The bark possesses a moderate quantity of relaxing power, associated with an excess of stimulation; acts rather promptly and diffusively; and leaves behind a warm impression, with an acceleration of the capillaries and smaller arterial circulation. The circulation, skin, salivary glands, and lymphatic system feel most of its influence; the serous and mucous tissues, and the kidneys, also being acted on. It is much more pungent and heating than zingiber, and much less so than capsicum; yet it is suited only to languid conditions, and should not be employed when the stomach is irritable. It increases the flow of saliva quite actively, and is excellent in dryness of the mouth and throat in low states of the system; and is a good associate of hydrastis and capsicum as a gargle in scarlatina and diphtheria.
Xanthoxylum fraxineum bark might be safe for most people, but the potential side effects are not known.
There isn’t enough information to know if the Xanthoxylum fraxineum is safe to use as medicine or what the potential side effects might be.
None are recorded.
Angelica Tree, Clavalier, Clavalier d’Amérique, Clavalier à Feuilles de Frêne, Clavalier Frêne, Frêne Épineux, Frêne Épineux du Nord, Fresno Espinoso Americano, Pepper Wood, Prickly Ash, Toothache Bark, Xanthoxylum, Yellow Wood, Zanthoxylum, Zanthoxylum americanum
Source: HenriettesHerb, http://www.henriettes-herb.com/eclectic/cook/XANTHOXYLUM_FRAXINEUM.htm