Following this puts new work involving it at the top of your briefing, with a note saying why it is there. Links are taken from the source record, never inferred.
FDA supplemental approval of a Risk Evaluation and Mitigation Strategy (REMS) for hydromorphone; this is a regulatory action, not a clinical trial, and does not report efficacy or safety trial outcomes.
FDA supplemental approval of a Risk Evaluation and Mitigation Strategy (REMS) for an existing oxycodone-acetaminophen combination, representing a regulatory action rather than new clinical evidence of efficacy or safety.