Varithena is a new, non-thermal chemical ablation technique to treat vein disease. It is a proprietary mixture of polidocanol, oxygen and carbon dioxide that is sent to us ready to use. Mixing them in precise concentrations makes Varithena a very consistent, potent microfoam that can treat any malfunctioning vein in your leg. It is commonly used for veins above or below the knee, very tortuous veins, and veins that may not have responded to other forms of treatment. Varithena is the only FDA-approved foam treatment for varicose veins in the great saphenous vein system of the leg.