Eucalyptol is a monoterpenoid and cyclic ether and is also commonly known as cineole. Eucalyptol not surprisingly got its name from eucalyptus, of which it’s the primary terpene. Eucalyptol comprises over 80% of the total in the essential oils from eucalyptus trees, and it’s also found in tea tree, mugwort, bay leaves, sweet basil, rosemary, sage, and cannabis.

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Eucalyptol is utilized as an ingredient in many products you associate with minty-freshness, including mouthwash, toothpaste, and cough suppressants. It is also prominent in the wellness industry for its use in aromatherapy, massage lotions, and oils.

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Eucalyptol is known for possessing pain-relieving,¹ anti-inflammatory,² and antioxidant properties,³ and is an effective treatment for nonturbulent rhinosinusitis. Eucalyptol’s anti-inflammatory cytokine inhibition has been shown to control airway mucus hypersecretion and asthma. Eucalyptol has also been shown to suppress colorectal cancer cell growth in humans.⁴

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A variety of cannabis strains contain eucalyptol including Bubba Kush, Headband, Super Silver Haze, and Girl Scout Cookies.