Cedrol is a bioactive sesquiterpene, a potent competitive inhibitor of cytochrome P-450 (CYP) enzymes. Cedrol inhibits CYP2B6-mediated bupropion hydroxylase and CYP3A4-mediated midazolam hydroxylation with Ki of 0.9 μM and 3.4 μM, respectively. Cedrol also has weak inhibitory effect on CYP2C8, CYP2C9, and CYP2C19 enzymes[1]. Cedrol is found in cedar essential oil and poetesses anti-septic, anti-inflammatory, anti-spasmodic, tonic, astringent, diuretic, sedative, insecticidal, and anti-fungal activities[2].
[1]. Jeong HU, et al. Inhibitory effects of cedrol, β-cedrene, and thujopsene on cytochrome P450 enzyme activities in human liver microsomes. J Toxicol Environ Health A. 2014;77(22-24):1522-32. [2]. Jin MH, et al. Cedrol Enhances Extracellular Matrix Production in Dermal Fibroblasts in a MAPK-Dependent Manner. Ann Dermatol. 2012 Feb;24(1):16-21