Generic drugs now make up over 90% of U.S. prescriptions but cost only 23% of total drug spending. Their history traces back to 1820, with key laws like Hatch-Waxman and FDA reforms shaping today's affordable medication system.
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Generic drugs don't launch right after patents expire. Legal delays, patent thickets, and corporate tactics create years-long gaps between expiration and availability - costing patients billions. Here's how it really works.
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