Eucalyptol

Where it occurs naturally

GC–MS studies identify 1,8-cineole as a major oil constituent in Eucalyptus maideni leaves and in several named basil cultivars. Its presence varies among plants and samples. Sources: Early selection of superior germplasm for oil-producing Eucalyptus maideni; Characterization of Essential Oil Composition in Different Basil Species and Pot Cultures by a GC-MS Method

Aroma & flavour

Its fragrance is described as fresh and camphoraceous; this does not establish a minty or cooling sensation. Sources: 1,8-cineole — Chemistry overview

What has research actually studied?

A double-blind placebo-controlled human trial tested isolated oral 1,8-cineole (200 mg three times daily) in 32 people with steroid-dependent asthma for 12 weeks. Mean daily prednisolone reduction was 3.75 mg with cineole versus 0.91 mg with placebo (P=0.006). Sources: Anti-inflammatory activity of 1.8-cineol (eucalyptol) in bronchial asthma: a double-blind placebo-controlled trial

What the evidence does not show

This small, disease-specific trial studied a standardized oral medicine; it was not a cannabis study and cannot establish effects from inhaling or consuming cannabis.

What does its presence in cannabis mean?

A product label or aroma profile cannot predict the product's experience. If present, eucalyptol may be one contributor among many volatile compounds, but presence alone does not predict the product's aroma.