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Phase iv clinical trial
/fˈeɪz ɹˌəʊmən fˈɔː klˈɪnɪkəl tɹˈaɪəl/
/fˈeɪz ɹˌoʊmən fˈoːɹ klˈɪnɪkəl tɹˈaɪəl/Phase iv clinical trial
01
sometimes the FDA approves a drug for general use but requires the manufacturer to continue to monitor its effects; during this phase the drug may be tried on slightly different patient populations than those studied in earlier trials
