Nutrition Care Passion Flower 1:2 is a practitioner-only, alcohol-free liquid herbal extract prepared from the aerial parts of Passiflora incarnata at a 1:2 extraction ratio. Traditionally used in Western Herbal Medicine, Passion Flower helps calm the nervous system, relieve symptoms of mild anxiety and nervous tension, and promote restful sleep. It is also traditionally used to support relaxation during periods of stress and to ease restlessness.