Eucalyptol — the cannabis terpene in depth

Eucalyptol is a monoterpene with molecular formula C₁₀H₁₈O and a boiling point of 176 °C. In cannabis, typical levels are 0.01–0.3 % dry weight. Outside the plant it is found in eucalyptus, rosemary, sage, bay laurel. Within the cannabis aroma landscape, Eucalyptol is an important contributor, dominant in chemovars such as Super Silver Haze, Girl Scout Cookies, Headband, Bubba Kush. It shapes overall character via the entourage effect.

eucalyptus, mint, cool, fresh — Eucalyptol is a monoterpene that defines its own chemovar signature.

Aroma

Profile: eucalyptus, mint, cool, fresh. Perceivable from ~0.3 % dry weight. With limonene: citrus-fresh; with myrcene: earthy-spicy.

Occurrence

In cannabis, Eucalyptol is produced in the trichomes of the flower. It is quantified by GC-MS and appears on modern COAs. Strains rich in Eucalyptol include Super Silver Haze, Girl Scout Cookies, Headband, Bubba Kush. It usually co-occurs with myrcene and caryophyllene — the exact ratios determine the sensorial nuance.

Effect

Clinically established for respiratory conditions (cineole); mucolytic and bronchodilator. Evidence: Juergens 2014 (Drug Res). Legal note: in Switzerland, cannabis with ≥ 1 % THC is a narcotic. CBD flowers below 1 % THC are legal; medical cannabis requires authorisation. Effect descriptions are not therapeutic claims.