| Completed | 2 | 29 | Europe | Tetrahydrocannabinol, Namisol, Dronabinol, Placebo | Radboud University Medical Center, European Union | Pancreatitis, Chronic, Abdominal Pain, Chronic Pain | 06/14 | 06/14 | | |
| Completed | 2 | 36 | Europe | Tetrahydrocannabinol, Namisol, Dronabinol, Placebo | Radboud University Medical Center, European Union | Postsurgical Pain, Abdominal Pain, Chronic Pain | 06/14 | 06/14 | | |