The sorrel root has the ability to absorb iron from the soil so it is considered from the Middle Ages that combats anemia and research have shown that it raises the hemoglobin in the blood. It also contains sulfur, phosphorus, and sorrel acid. The leaves contain a large amount of oxalic acid. It has diuretic and tonic action. The sorrel root is suitable for those who suffer from hemorrhoids, mouth's and throat's ulcers.