Children under the age of 18 should not ingest eucalyptus leaves or oil. Children age 6 and older can take cough medicines made with eucalyptus. Eucalyptus steams or chest rubs may be safe, but consult a doctor first.
People with asthma should consult their doctors before using eucalyptus. Eucalyptus may contain ingredients that trigger asthma attacks.
Only take eucalyptus oil under the strict care of a licensed health professional. Taking 3.5 milliliters of undiluted oil can be fatal. Signs of eucalyptus poisoning are nausea, vomiting, stomach pain, vertigo, fatigue, diarrhea and trouble breathing.
Undiluted eucalyptus oil is known to cause skin irritations, rashes and burning. Before applying to the skin, dilute 15 drops of eucalyptus oil in a half-cup of carrier oil such as sweet almond, olive, or grape seed oil
Nursing mothers and pregnant women should avoid eucalyptus oil. Although it is unknown whether eucalyptus oil is passed on to the infant through the mother, fatalities have occurred after giving infants eucalyptus oil.
Consult a doctor before taking eucalyptus if you are using any medications. Eucalyptus may increase drowsiness when combined with benzodiazepines, barbiturates, and narcotics. Eucalyptus may also hinder the liver from effectively breaking down other medications, which could lead to side effects.
Eucalyptus leaves should be avoided where there is inflammation of the kidneys and intestinal tract, bile duct inflammatory disease, liver disease, or low or high blood pressure. The leaves' tannins can cause irritation to these conditions.
To avoid eucalyptus dangers, use safe dosages. For inhalation, use two to four drops of eucalyptus oil in a vaporizer or per cup of boiling water. For a eucalyptus leaf infusion or tea, add 1/4 to 1/2 teaspoon of dried leaves to a cup of hot water and steep for 20 minutes. Drink 3 cups daily. Take 10 to 30 drops of eucalyptus leaf tincture daily.