Post-Marketing Surveillance: What Does Phase 4 of Drug Development Focus On?
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4 min read
A study of 222 novel drugs approved by the FDA found that nearly a third (32%) were affected by a postmarket safety event, highlighting the importance of post-approval monitoring [1.9.3, 1.9.4]. So, what does phase 4 of drug development focus on after a medication is already on the market?
