Marrubium is especially useful for not only is an excellent lung remedy, it also has valuable bitter properties. If anti-biotics have been used please follow the guidelines for herbal support of such therapy given in the section on the immune system. Broader Context of Treatment Aromatherapy treatment aims at combating the infection, reducing fever, easing the cough and expelling mucus. In the first stages, when the cough is dry and painful, steam inhalation with the following oils may give a great deal of relief. Bergamot and Eucalyptus oils are also effective in lowering fever, and all these oils will help to reinforce the immune response to the infection.