Terpinolene: What the Research Says (and Doesn’t)
Terpinolene is the rarest of the major terpenes and has the thinnest research file. This page is short because the honest summary is short.

What researchers have examined
A 2013 Japanese study reported sedative-like effects of inhaled terpinolene in mice — a finding that surprises people, since terpinolene-dominant cultivars are folk-described as energetic. Beyond that, terpinolene appears mostly in chemistry and food-science literature as a component of apples, tea tree, and nutmeg.
Open questions
One mouse study is one mouse study. The gap between folk description and the lone laboratory finding is a good illustration of why this site describes aroma and feeling, and never promises effects.
Sources
- Ito K, Ito M. (2013). The sedative effect of inhaled terpinolene in mice. Journal of Natural Medicines, 67(4):833–837. [doi]
More in the library: all research summaries · the terpene guide