Compound Monograph
Eucalyptol
Eucalyptol (1,8-cineole) is a monoterpenoid ether responsible for the fresh, camphoraceous scent of eucalyptus and many herbs.
Where Does It Come From? (5)
Eucalyptol is a naturally occurring monoterpenoid (cyclic ether), found in Eucalyptus, Rosemary, Linden flower and 2 other sources. It is flagged as moderately toxic.
Research & Evidence
Eucalyptol, also called 1,8-cineole, is the dominant monoterpenoid in eucalyptus oil and a common constituent of rosemary, sage, bay and many other aromatic plants. It gives these herbs their fresh, cooling, camphor-like aroma and is widely used in flavouring, fragrance, oral-care products and cough and cold preparations. It has been studied for expectorant and anti-inflammatory effects on the airways.
Toxicity & Safety
In small amounts as a flavour and fragrance ingredient, eucalyptol is well tolerated. Concentrated eucalyptus oil, however, is hazardous if swallowed: ingestion of even small volumes of the neat oil can cause central nervous system depression and seizures, especially in children, and it should be kept away from young children and never taken internally undiluted.