Phase 4 trials occur after a drug is released to the public.

Name: Phase 4 trials occur after a drug is released to the public.
Brand: Quizplus
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Phase 4 trials, also known as post-marketing surveillance trials, are conducted after a drug has been approved by regulatory authorities and released to the public to monitor the drug's long-term effectiveness and gather more information about any side effects or risks associated with its use.

Phase 4 Trials Occur After a Drug Is Released to the Public