Prickly Ash Bark Powder

What the brand says

Prickly Ash is woody shrub in the citrus family native to eastern and central North America. While the soft, blond wood isn’t suitable as timber, the chopped bark is tinctured for topical use. Prickly ash bark was also an ingredient in the herbal bitters formula promoted by the 17th century American botanist, John Bartram. Precautions - Use with caution during pregnancy. Prickly ash can stop lactation, and should be avoided by mothers wishing to continue nursing.