CB receptor antagonists such as rimonabant might be useful in treating acute cannabis intoxication, in the way that the mu-opioid receptor (mOR) antagonists naloxone and naltrexone are used to treat opiate intoxication. However, such medications are no longer available for clinical use. Rimonant and similar CB1 receptor antagonists were withdrawn from clinical development and use because of psychiatric side-effects associated with their long-term use [25].