1,8-Cineole is the main constituent of essential oils. It is a terpene oxide. It is used as percutaneous penetration enhancer, skin stimulant in skin baths, treating bronchitis, sinusitis and rheumatism. It has decongestant and antitussive property. Produced and qualified by HWI pharma services GmbH. Exact content by quantitative NMR can be found on the certificate.

1,8-Cineole may have been used in quantitative analysis of volatile and semi-volatile compounds of Salvia officinalis using GC-MS method.