Reduction in laboratory markers of allergy including TNF-α and IL-6, IL-8, IL-1ß MIP-3α, IgE, and eosinophil counts in nasal discharge and allergic symptoms including nasal mucosal congestion, nasal itching, runny nose, sneezing attacks, turbinate hypertrophy, and mucosal pallor in allergic rhinitis was decreased by the plant, Qt, and kaempferol in clinical studies. The gene discussed is CCL20; the disease is allergic rhinitis.