How long does drug development take?

• A. 3-6 years.
• B. 10-15 years.
• C. 5-9 years.
• D. 2-4 years.

Answer: (C)

Drug development is a multi-stage process that runs from initial discovery through preclinical testing, multiple clinical trial phases, regulatory review, and post-marketing steps. While the total journey from discovery to market typically spans about a decade or more (roughly 10–15 years in many contexts), some teaching materials focus on the clinical development window after a viable candidate has been identified. In that framing, completing the necessary Phase I–III trials and obtaining regulatory submission and approval often takes around 5–9 years. This is why the 5-9 year range is given as the answer here. The longer 10–15 year figure reflects the full spectrum from discovery to approval, which includes discovery and preclinical work that happens before clinical testing.