a daily diary. Both drugs reduced pruritus (L = 38%, C = 40%) after a single dose as evaluated by patients. Physician evaluations after a week showed reductions in pruritus (L = 73%, C = 82%, p=0.6) which persisted to the end of study (L = 78%, c = 79%). Similar reductions were seen for number of hives, size of hives, and erythema. At the end of the two weeks, complete relief was seen in 60% of L patients and 53% of C patients. Evaluation of 470