Since the 1992 enactment of the Prescription Drug User Fee Act, the FDA's drug review process has accelerated, and the rate of safety warnings and withdrawals has increased as well, researchers reported in Health Affairs. The study team said drugs that have been on the market longer have stronger safety records and older drugs should be preferred unless newer drugs represent breakthroughs in treatment. The FDA said the law gave it resources that improved the review process and allowed the creation of a system that monitors safety after approval.

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