Blue Vervainis a native plant that has been used for centuries as a nervine and antispasmodic. It is a supreme relaxant of tension, both physical and mental, conscious and unconscious. Blue Vervain is particularly useful for neck and shoulder tension, stress headaches, TMJ, teeth grinding, anxiety and nervousness. It has an intense bitter flavor that draws energy down, cools and relieves the upper part of the body from constricting heat and tension. 1 oz.