ACADIA Pharmaceuticals, Inc., a biopharmaceutical company, focuses on the development and commercialization of small molecule drugs for the treatment of central nervous system disorders. It focuses on developing a portfolio of its four advanced product candidates, including Pimavanserin, which is in phase III development for Parkinson's disease psychosis; and a product candidate in phase II for chronic pain and a product candidate in phase I for glaucoma, each in collaboration with Allergan, Inc., as well as ACP-106 in IND-track development for neuropsychiatry and sleep indications. Pimavanserin is also in a phase II trial as a co-therapy in schizophrenia and in a proof-of-concept clinical study for sleep maintenance insomnia. ACADIA PharmaceuticalsÂ’ development pipeline also consists of ACP-105 for endocrine indications in IND-track development stage; Serotonin program for neuropsychiatry and sleep indications in preclinical stage; pro-cognitive antipsychotic (PCAP) program for schizophrenia in preclinical stage; Muscarinic program for neuropsychiatry and other indications; and two series of compounds for Parkinson's disease. It has a collaboration agreement with Biovail Laboratories International SRL to co-develop and commercialize pimavanserin in the United States and Canada. The company, formerly known as Receptor Technologies, Inc., was founded in 1993 and is headquartered in San Diego, California.