Alkermes plc, a biopharmaceutical company, researches, develops, and commercializes pharmaceutical products to address unmet medical needs of patients in various therapeutic areas in the United States, Ireland, and internationally. Its marketed products include ARISTADA (aripiprazole lauroxil), an extended-release intramuscular injectable suspension for the treatment of schizophrenia; VIVITROL (naltrexone for extended-release injectable suspension) for the treatment of alcohol and opioid dependence; RISPERDAL CONSTA for the treatment of schizophrenia and bipolar I disorder; INVEGA SUSTENNA for the treatment of schizophrenia and schizoaffective disorder; XEPLION, INVEGA TRINZA, and TREVICTA for treating schizophrenia; and VUMERITY (diroximel fumarate) for the treatment of relapsing forms of multiple sclerosis in adults, including clinically isolated syndrome, relapsing-remitting and active secondary progressive diseases. The company is also ALKS 3831 to treat schizophrenia; and ALKS 423