The inhalation of camphor, eucalyptus and menthol is the best help in the initial stage of colds, with fatigue and nervous disorders, soothes the nervous system. Particularly effective in the epidemic of influenza, someone nearby coughed , sneezed-a couple of inhaling oils from the inhaler-and all the bacteria and viruses were hit on the spot. One bottle is enough for 2-3 months, depending on the frequency of use