Trevi Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on the development and commercialization of Haduvio to treat serious neurologically mediated conditions. The company is developing Haduvio, which is in Phase IIb/III clinical trial is an oral extended release formulation of nalbuphine that is used for the treatment of chronic pruritus, chronic cough in patients with idiopathic pulmonary fibrosis, and levodopa-induced dyskinesia in patients with Parkinson's disease, as well as to treat chronic kidney disease-associated with pruritus. It has a license agreement with Endo Pharmaceuticals Inc. to develop and commercialize products incorporating nalbuphine hydrochloride in any formulation; and Rutgers to develop and commercialize products incorporating nalbuphine for any human or animal use. The company was incorporated in 2011 and is headquartered in New Haven, Connecticut.