Varicose veins are veins that have become enlarged and tortuous. The term commonly refers to the veins on the leg, although varicose veins can occur elsewhere.
Varicose veins usually result from failures in valves in veins connecting the superficial veins to the deep system in your legs. This is a mechanical problem. No medicine can restore this function. Horse chestnut extracts have been studied and appear to decrease the swelling due to venous insufficiency but the appearance is unchanged.