Pleurisy root (Asclepias tuberosa) was in use before the Europeans arrived on this continent primarily for its special benefits in regard to the lungs hence, the name ‘pleurisy.’ It is used in treating the lungs, to include such conditions as pleurisy, pains in breathing or an inflammation of the pleural cavity, the common cold, flu, pneumonia, acute bronchitis and chest congestion with thick mucus and fevers accompanied by tight chest conditions. Pleurisy root stimulates expectoration and eases inflammation, bringing about some re-absorption of fluid from the lungs. It has a tonic effect on the whole system. It is useful for calming spasms and relaxing the body.