Because duckweed can be found almost everywhere except the Arctic, she 'got a residence permit' of medicine is hardly around the world. Thus, in our region in ancient times was added to the soup vodokras sick, exhausted constant GOVERNMENTAL inflammatory diseases (previously mentioned – Qatar), in particular – the respiratory tract. In Russian (and Chinese) traditional medicine as a decoction of his mouth was used for various allergic diseases (Urticaria, angioedema, etc.), vitiligo, as well as an external agent recommended by carbuncles, tumors, erysipelas, conjunctivitis and snakebites. Also a poultice of duckweed was known as emollient tool, particularly when coughing or hemorrhoids. Its infusion has also been used as a hemostatic, obscheukre plyayuschee, astringent, choleretic, about tivotsingotnoe, protivogrippoznoe and antimicrobial agent and a cure for dyspepsia. Arab doctors and herbalists in several European countries and administered broth infusion into the duckweed at bronchial asthma, rhinitis, laryngitis, pharyngitis, bronchitis and even polyps. At the same pain as a poultice vodokras used for aching muscles, bones and joints, rheumatism, podagre.Spirtovaya vodokrasa tincture is used in inflammation of the mucous membranes of the upper airway, treatment of wounds, ulcers and boils.