Single-Herb Tinctures › Prickly Ash Image 1 of 1 Prickly Ash from $12.99 Prickly Ash bark (Zanthoxylum clava-herculis) stimulates circulation and stimulates the immune system. Size: Select Size 1 ounce 2 ounce Quantity: Add To Cart Added! Prickly Ash bark (Zanthoxylum clava-herculis) stimulates circulation and stimulates the immune system. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More