← All lessons
RESEARCH LITERACY LAB / CLINICAL FORMING
Phase I, II, III: what the numbers mean
Clinical development moves through different questions; a phase label is not an approval.
THE QUESTION
Recognize why each clinical phase exists and what a phase label cannot guarantee.
COMMON MISREAD
“In Phase III” is sometimes read as “proven and approved.”
TAKE AWAY
Look for the actual results and a regulator decision, not just the phase number.
INTERACTIVE PREVIEW / FULL LESSON FORMING
Try one question.
The full lesson is being built. This short preview gives you the core distinction without pretending the rest is ready.
FIELD CHECK / 01
A compound has entered Phase III. Is it automatically approved?
FURTHER READING
Go to the source.
These links support the lesson's research-literacy concepts. The preview examples are illustrations, not quotes or new study results.
- Regulatory explanationFDA: clinical research phases ↗