Pharmacology Of Dronabinol

Indication For the treatment of anorexia associated with weight loss in patients with AIDS, and nausea and vomiting associated with cancer chemotherapy in patients who have failed to respond adequately to conventional antiemetic treatments
Pharmacodynamics Marinol may has complex effects on the central nervous system (CNS), including cannabinoid receptors. Dronabinol may inhibit endorphins in the emetic center, suppress prostaglandin synthesis, and/or inhibit medullary activity through an unspecified cortical action.
Mechanism of action The mechanism of action of marinol is not completely understood. It is thought that cannabinoid receptors in neural tissues may mediate the effects of dronabinol and other cannabinoids. Animal studies with other cannabinoids suggest that marinol's antiemetic effects may be due to inhibition of the vomiting control mechanism in the medulla oblongata.
Absorption 90 - 95%
Volume of distribution
  • 10 L/kg
Protein binding 97%
Metabolism Hepatic
Route of elimination Dronabinol and its biotransformation products are excreted in both feces and urine.
Half life Alpha phase: approximately 4 hours; Beta phase: 25-36 hours
Clearance
  • 0.2 L/kg-hr
Toxicity Not Available