3 ms·
Phase 4 is like the RC, and by that point it seems to be pretty stable.
by diag 6y ago
Phase 4 is like the RC, and by that point it seems to be pretty stable.
- bmj 6y agoPhase 4 trials are typically post-approval and used to validate marketing claims ("Pfizer's Covid vaccine is also proven to promote weight loss," for example). The result of a phase 3 trial is a release candidate, and the FDA (or equivalent organization) stamps the RC as gold master.
- stjohnswarts 6y agoI think they add more age groups and diversity as a followup.