This study was to evaluate the efficacy and safety or the formula "QCT' in treatment of urticaria. The results showed that "QCT" has no acute and sub-acute toxicity. LD50 with a high dose (62.5 folds higher than that used for people) was not specified. Oral administration of "QCT' at a high dose (25 folds higher than that used for people) for 8 weeks caused no side-effects in organs and viscera
Urticaria ; Tea ; Therapeutics