MONMOUTH JUNCTION, N.J.--(BUSINESS WIRE)--Tris Pharma, Inc. (Tris), a commercial-stage biopharmaceutical company focused on attention deficit hyperactivity disorder (ADHD), pain, addiction and neurological disorders, announced today the initiation of ALLEVIATE-1 and ALLEVIATE-2, pivotal Phase 3 trials evaluating the efficacy and safety of cebranopadol for the treatment of moderate-to-severe acute pain. Cebranopadol is a first-in-class investigational new therapy, with a novel mechanism of actio