The present invention provides a buprenorphine dimer compound, wherein the two buprenorphine portions are linked via an ethylene spacer, wherein the spacer is bonded to the two opioid molecules via an ether bond. Pharmaceutical compositions comprising such a buprenorphine dimer drug are also disclosed, and the use of such compounds in the treatment of gastrointestinal hyperalgesia generally and in particular diarrhea-predominant irritable bowel syndrome.

The present invention provides a buprenorphine dimer compound, wherein the two buprenorphine portions are linked via an ethylene spacer, wherein the spacer is bonded to the two opioid molecules via an ether bond. Pharmaceutical compositions comprising such a buprenorphine dimer drug are also disclosed, and the use of such compounds in the treatment of gastrointestinal hyperalgesia generally and in particular diarrhea-predominant irritable bowel syndrome.

Provided herein are methods for treating pain such as acute or chronic pain or fever in subject without risking hepatotoxicity. The subject may be at risk of hepatotoxicity if administrated an acetaminophen monomer. The method includes administering a pharmaceutical composition containing an acetaminophen dimer compound, wherein the phenolic hydroxyl groups of two acetaminophen compounds are linked via an ethylene spacer.

The present invention provides method and compositions for the treatment of peripheral neuropathic pain by administering to a patient a therapeutically effective amount of a buprenorphine dimer compound, wherein the two buprenorphine portions are linked via an ethylene spacer, and wherein the spacer is bonded to the two opioid molecules via an ether bond. Preferably, the active agent is provided in the form of an injectable depot.

Alkoxy-substituted N-benzyl-2-phenylacetamide compounds and derivatives are G-protein coupled receptor (GPR) 88 modulators for use in the treatment of a disease mediated by GPR88. Indications include Tourette's Syndrome, Huntington's Disease (HD), Addiction, Parkinson's Disease (PD), Schizophrenia, and Attention Deficit Hyperactivity Disorder (ADHD), choreiform movements, speech delay, learning disabilities, depression, hyperkinetic movement disorders characterised by chorea and/or dystonia, psychosis, cognitive deficits in schizophrenia, affective disorders, bipolar disorder, Alzheimer's disease and basal ganglia disorders.

Alkoxy-substituted N-benzyl-2-phenylacetamide compounds and derivatives are G-protein coupled receptor (GPR) 88 modulators for use in the treatment of a disease mediated by GPR88. Indications include Tourette's Syndrome, Huntington's Disease (HD), Addiction, Parkinson's Disease (PD), Schizophrenia, and Attention Deficit Hyperactivity Disorder (ADHD), choreiform movements, speech delay, learning disabilities, depression, hyperkinetic movement disorders characterised by chorea and/or dystonia, psychosis, cognitive deficits in schizophrenia, affective disorders, bipolar disorder, Alzheimer's disease and basal ganglia disorders.