Pharmaceutical preparations and substances for the treatment of pain, neuropathic pain, cancer pain, peri-operative pain, oncology, cancer symptoms, multiple sclerosis, spasticity, MS spasticity, convulsions, seizures, epilepsy, paediatric epilepsy, intractable childhood epilepsy with generalized tonic-clonic seizures (ICE-GTC), generalized epilepsy with febrile seizures plus (GEFS+), dup 15, and Doose syndrome, bladder disfunction, inflammatory bowel disease, ulcerative colitis, Crohn's dise...