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 action for tramadol hydrochloride REMS; establishes risk mitigation requirements but does not report clinical trial data or efficacy evidence.
FDA supplemental approval of a Risk Evaluation and Mitigation Strategy (REMS) for an existing oxycodone-acetaminophen combination product; this is a regulatory action, not a clinical trial, and does not report efficacy or safety data.
FDA supplemental approval for a Risk Evaluation and Mitigation Strategy (REMS) governing meperidine hydrochloride tablets; this is a regulatory action, not a clinical trial, and does not report efficacy or safety outcomes.