Titan Pharmaceuticals, Inc. is a pharmaceutical company. The Company is engaged in developing therapeutics utilizing its long-term drug delivery platform, ProNeura, for the treatment of select chronic diseases. Its ProNeura continuous drug delivery system consists of a small, solid rod-shaped implant made from a mixture of ethylene-vinyl acetate (EVA), and a drug substance. Its first product, Probuphine (buprenorphine implant), is based on ProNeura technology, which is used for the maintenance treatment of opioid use disorder in clinically stable patients taking 8 milligrams (mg) or less a day of oral buprenorphine. Its product pipeline includes the Kappa Opioid Receptor Agonist (TP-2021) Implant and Nalmefene Implant. Its TP-2021 is used for the treatment of moderate-to-severe chronic pruritus. Its Nalmefene Implant is used for the prevention of relapse in opioid use disorder (OUD) patients following detoxification from opioids.