Fiuggi water is a natural, oligomineral water. Its composition comes from the tufaceous ground of the hollows occupied by the Spas. It is subjected to a filtering action which purifies and reduces its mineralisation becoming an oligomineral water of a very strong diuretic effect. It provokes the expulsion of kidney stones and prevents their formation; it is also particularly indicated during preparation of operations for urinary calculosis and post-operative treatment. It is an excellent remedy for infections of the urinary tract and, thanks to its action on the metabolism of uric acid, favours the cure of gout and uratic arthropathies.