Common knotgrass herb is a safe and effective astringent and diuretic herb that is used mainly in the treatment of complaints such as dysentery and haemorrhoids.\n\nit is also taken in the treatment of pulmonary complaints because the silicic acid it contains strengthens connective tissue in the lungs action:\n\n1) common knotgrass herb was formerly widely used as an astringent both internally and externally in the treatment of wounds, bleeding, piles and diarrhea.\n\n2) its diuretic properties make it useful in removing stones.