Oliceridine (TRV-130) is a potent μ-opioid receptor agonist. In cell-based assays, TRV130 elicits robust G protein signaling, with potency and efficacy similar to morphine, but with far less β-arrestin recruitment and receptor internalization. In rodents, TRV130 is potently analgesic while causing less gastrointestinal dysfunction and respiratory suppression than morphine at equianalgesic doses. Oliceridine is being developed by Trevena for the first-line treatment of moderate-to-severe acute postoperative pain. Phase III development is underway for the treatment of postoperative pain in the US. Phase II development is underway for the treatment of acute pain in the US.

Lorcaserin, currently marketed under the trade name Belviq and previously Lorqess during development, is a weight-loss drug developed by Arena Pharmaceuticals. Lorcaserin is a selective 5-HT2C receptor agonist, and in vitro testing of the drug showed reasonable selectivity for 5-HT2C over other related targets. 5-HT2C receptors are located almost exclusively in the brain, and can be found in the choroid plexus, cortex, hippocampus, cerebellum, amygdala, thalamus, and hypothalamus. The activation of 5-HT2C receptors in the hypothalamus is supposed to activate proopiomelanocortin (POMC) production and consequently promote weight loss through satiety. This hypothesis is supported by clinical trials and other studies. While it is generally thought that 5-HT2C receptors help to regulate appetite as well as mood, and endocrine secretion, the exact mechanism of appetite regulation is not yet known. Lorcaserin has shown 100x selectivity for 5-HT2C versus the closely related 5-HT2B receptor, and 17x selectivity over the 5-HT2A receptor

Ezogabine (U.S. adopted name) or retigabine (international nonproprietary name) is one of a family of aminopyrroles with anticonvulsant activity. It is used as an adjunctive treatment for partial epilepsies in treatment-experienced adult patients. The drug was approved by the European Medicines Agency under the trade name Trobalt and by the United States Food and Drug Administration (FDA), under the trade name Potiga. The mechanism by which ezogabine exerts its therapeutic effects has not been fully elucidated. In vitro studies indicate that ezogabine enhances transmembrane potassium currents mediated by the KCNQ (Kv7.2 to 7.5) family of ion channels. By activating KCNQ channels, ezogabine is thought to stabilize the resting membrane potential and reduce brain excitability. This mechanism of action is unique among antiepileptic drugs, and may hold promise for the treatment of other neurologic conditions, including migraine, tinnitus and neuropathic pain. In vitro studies suggest that ezogabine may also exert therapeutic effects through augmentation of GABA-mediated currents.

Nabilone is a synthetic cannabinoid approved under the brand name cesamet for treatment of severe nausea and vomiting associated with cancer chemotherapy. Nabilone is an orally active which, like other cannabinoids, has complex effects on the central nervous system (CNS). It has been suggested that the antiemetic effect of nabilone is caused by interaction with the cannabinoid receptor system, i.e. the CB (1) receptor, which has been discovered in neural tissues.

Halazepam is a benzodiazepine derivative. It possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties. Halazepam is used to relieve anxiety, nervousness, and tension associated with anxiety disorders. Halazepam (Paxipam) is no longer commercially available in the United States. Common adverse effects are: hypotension, nausea, xerostomia, confusion, headache. Alcohol should be avoided while taking Paxipam as it causes drowsiness as well. Medications that also cause drowsiness should not be taken along with Paxipam. These include: Antidepressants, Pain relievers, Seizure medications, Muscle relaxants, Antihistamines, Sleeping pills and sedatives.

Prazepam is a benzodiazepine derivative and is indicated to treat symptoms of anxiety. Benzodiazepines are used to treat severe incapacitating symptoms or symptoms leading to an extreme suffering for the patient. Prazepam is believed to stimulate GABA receptors in the ascending reticular activating system. Since GABA is inhibitory, receptor stimulation increases inhibition and blocks both cortical and limbic arousal following stimulation of the brain stem reticular formation. Prazepam is a prodrug for N-desmethyl-diazepam, which is responsible for the therapeutic effects of prazepam. Prazepam was discontinued in USA.