Schedule I and III (US)

Schedule II (CA) (Canada)

mostly hepatic by CYP2C

C

8-10%

Orally, Smoked (or vaporized)

10-35% (inhalation), 6-20% (oral)

95-99%

65-80% (feces), 20-35% (urine) as acid metabolites

1.6-59 h, 25-36 h (orally administered dronabinol)

157°C (314.6°F)

0.0028 mg/mL (23 °C) in water

-152° (ethanol)