β-Cedrene

β-Cedrene shares its toxicity profile with α-cedrene. Cedrene (unspecified isomer) by intraperitoneal, oral or inhalation routes significantly induces CYP and ethylmorphine N-demethylase, with potential to interact with opioids.

Oral 200 mg/kg/day for three days increased ethylmorphine metabolism by 160 percent and CYP by 40 percent. Inhalation 60 mg/kg/day for 2–6 days raised EMND by 180 percent.

Direct acute toxicity and skin sensitization data are sparse, but structural similarity to α-cedrene does not raise specific safety flags.

β-Cedrene is the minor isomer in cedarwood oils. The compound is typically analyzed alongside α-cedrene as an oil quality marker.