Generic drugs, defined as pharmaceutically equivalent versions of brand-name medications with identical active ingredients, deliver equivalent clinical outcomes at substantially lower cost. In the United States, generics represent around 90 percent of all dispensed prescriptions and offer savings of 50 to 80 percent compared to originator products, thereby expanding access to essential therapies in both high-income and resource-limited settings. This editorial examines the regulatory approval process for generics, which depends on bioequivalence studies demonstrating that pharmacokinetic measures (area under the curve and peak concentration) fall within 80 to 125 percent of the reference drug, thus obviating the need for repeat efficacy trials. We review evidence from randomized controlled trials and large observational studies across cardiovascular, endocrine, and chronic disease treatments that overwhelmingly confirm equivalence in efficacy and safety. Exceptions arise with narrow-therapeutic-index drugs, including certain antiepileptics and immunosuppressants, where careful monitoring during formulation switches is recommended. Economic analyses indicate annual savings in the United States exceed tens of billions of dollars, while global public health programs rely on generics for HIV/AIDS and tuberculosis treatment. Challenges such as manufacturing quality under cost pressures and periodic drug shortages underscore the need for vigilant oversight. We advocate policy measures that align affordability with stringent quality standards and enhanced communication to reinforce confidence in generic therapies.
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