Exercise-induced asthma is a condition where the patient suffers from asthma symptoms—breathlessness, cough and wheezing—with exercise. Japanese researchers have found that vitamin C relieves exercise-induced asthma. The study was a small one. It was presented at the World Congress of Asthma; Buenos Aires, Brazilon October 19, 1999, involved children who did not regularly take any asthma medication. The researchers tested the children, then gave them a dose of 2,000 mg. of vitamin C per day for four weeks. During an exercise test given at the end of the four weeks, eight out of 17 reported fewer attacks and better lung function.