Eucalyptus leaves used for aroma and other purposes. Herbal tea. The tea brewed from its leaves is very popular for curing a range of medical conditions. Improves Respiratory Health - Boil leaves in water in a closed vessel and inhale directly to cure running nose cold etc. and overall better respiratory system. Eucalyptus is a natural anti-inflammatory substance so consuming its tea can do everything from easing aches and pains to protecting the heart. Controls Diabetes. Skin Care - The natural antibacterial properties of eucalyptus make it ideal for protecting skin health as well.