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 methadone hydrochloride REMS establishes risk management requirements; does not report clinical trial efficacy or comparative outcomes.
FDA supplemental approval for labeling changes to leucovorin calcium tablets; regulatory action confirming revised labeling without new clinical efficacy data.