XXTERRA 1 oz XXTERRA is an herbal formulation of bloodroot powder and zinc chloride solution, combined and stirred into a smooth brown paste. Bloodroot contains sanguinarine (the primary component), chelarathrine and protopine, all of which are alkaloids. Zinc chloride promotes inflammation of the sarcoids surface and with the alkaloids, alters the sarcoid cells so they become antigenic to the host. Accordingly, XXTERRA alters the antigenicity of a sarcoid to stimulate the host's immune system and result in an immune rejection reaction of the sarcoid.