How to brew tea: pour 1 teaspoon of the leaf with 1 cup (200 ml) boiling water, cover, leave for 20 minutes, drain. It is important to know that pregnant women and young children are better off avoiding concentrated eucalyptus teas. Eucalyptus tea is an herbal tea made from the leaves of the Australian eucalyptus (Eucalyptus globulus) tree. This hot tea is commonly used to treat symptoms of cold and flu and can be combined with other teas as a soothing tonic. Eucalyptus tea is commonly used as an inhalant to relieve symptoms of the common cold or flu. The tea vapors are often described as healing because inhaling them helps to open up congested airways. In addition to treatment for the common cold, people use eucalyptus to gain a variety of other health benefits including: treatment of asthma, treatment for bronchitis, treatment for diabetes, to reduce dental plaque and bad breath, to eliminate head lice, to avoid insect bites, to get rid of headaches, to treat liver and gallbladder problems. Do not use the product in case of individual intolerance. It is always safest to speak with your healthcare provider before using this or any other herbal treatment.