Fuction : The cineole-based oil is used as component in pharmaceutical preparations to relieve the symptoms of influenza and colds, in products like cough sweets, lozenges, ointments and inhalants. Eucalyptus oil has antibacterial effects on pathogenic bacteria in the respiratory tract. Inhaled eucalyptus oil vapor is a decongestant and treatment for bronchitis. Cineole controls airwaymucus hypersecretion and asthma via anti-inflammatory cytokine inhibition. Eucalyptus oil also stimulates immune system response by affects on the phagocytic ability of human monocyte derivedmacrophages.