What is another word for phase iv clinical trials?
Pronunciation: [fˈe͡ɪz ɹˌə͡ʊmən fˈɔː klˈɪnɪkə͡l tɹˈa͡ɪə͡lz] (IPA) 
Phase IV clinical trials are the pinnacle of a drug's development, signaling that it has been approved for commercial use. They are often referred to as post-marketing trials, where the drug is tested on a larger scale with diverse populations to monitor its effectiveness and safety over extended timeframes. There are various synonyms for phase IV clinical trials, including post-approval studies, confirmatory trials, and long-term safety studies. Since these trials aim to assess the drug's long-term effects on patients, they may also be called follow-up studies or observational studies. Ultimately, the goal of phase IV clinical trials is to ensure that patients continue to benefit from the medication while maintaining a high level of safety and efficacy.
