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 a Risk Evaluation and Mitigation Strategy (REMS) governing an existing hydrocodone–acetaminophen combination product; regulatory actions do not report clinical efficacy or trial outcomes.
FDA supplemental approval for REMS (Risk Evaluation and Mitigation Strategy) on acetaminophen–codeine phosphate tablets; confirms regulatory compliance but does not report clinical efficacy or comparative benefit data.