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
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phase_iv
Lexical relations in WordNet via ILI (3)
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Hyperonyms
(has_hyperonym)
00792356-n:
a rigorously controlled test of a new drug or a new invasive medical device on human subjects; in the United States it is conducted under the direction of the FDA before being made available for general clinical use
Glosses
(gloss)
00021878-r:
on certain occasions or in certain cases but not always
Glosses
(gloss)
08124256-n:
a federal agency in the Department of Health and Human Services established to regulate the release of new foods and health-related products
