Description. Corn silks contain vitamin K, ascorbic acid and pantothenic acid, fatty and volatile oils and other substances. The entire corn plant has long been used in Chinese and American Indian cultures for medicinal and nutritional purposes. Research has shown that corn silk may cause the production of bile and improve liver function. Chinese research has shown that corn silk can also lower blood pressure and improve blood-clotting. Because corn silk has such a high concentration of potassium (Vitamin K), it is a powerful diuretic. It can be used for many problems with the urinary tract. It is helpful for kidney stones, cystitis, and problems with urine flow. Use. Corn silk is used for many types of urinary tract problems. The plant can be used to sooth the lining of the urinary tract. It can help relieve pain and difficulty with urination. Corn silk can help relieve the problem of cystitis. Corn silk is believed to reduce the formation of kidney stones. It can also help relieve symptoms for person who already has stones. In China, corn silk is often used to treat fluid retention and even jaundice. Use in cases of inflammation of the gallbladder, bile duct, and hepatitis with retention of bile secretion. Attention! Before using any herbal products, make sure that you have full knowledge of how the herb works and any adverse reaction it may cause.