Noun
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
Source: WordNetI work with a place in Santa Monica called Phase IV. My doctor recommended them to me when I started losing weight. They help people train for things like triathlons or biking and running races. They offer physical therapists, testing, lectures. Drew Carey
Activity has stopped in Phase IV of the DMRC, which, in the run-up to the suspension of services, witnessed some measured progress in approving priority corridors, awarding of contracts and commencement of construction work. Source: Internet
After a product initially is approved for marketing, Phase IV studies gather long-term data regarding its safety, effectiveness, and best use. Source: Internet