What does phase IV clinical trials mean?
• PHASE IV CLINICAL TRIALS (noun) The noun PHASE IV CLINICAL TRIALS has 1 sense: 1. 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 Familiarity information: PHASE IV CLINICAL TRIALS used as a noun is very rare.