ACADIA Pharmaceuticals Inc. is a biopharmaceutical company. The Company is focused on the development and commercialization of medicines for the treatment of neurological and related central nervous system disorders. The Company’s drug candidate NUPLAZID (pimavanserin) is under development for the treatment of Parkinson’s disease psychosis, Alzheimer’s disease psychosis, Schizophrenia and Sleep disturbances. The Company is also conducting preclinical programs for alpha adrenergic agonists indicated for the treatment of chronic pain and muscarinic drugs for the treatment of glaucoma. NUPLAZID has an active ingredient pimavanserin, is a selective serotonin inverse agonist (SSIA) preferentially targeting 5-HT2A receptors that was discovered by the Company. The Company in collaboration with Allergan, has discovered and engaged in the development of small-molecule product candidates, such as alpha adrenergic agonists and muscarinic receptors.