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See the DrugPatentWatch profile for atorvastatin
No. Atorvastatin (the active drug in Lipitor) is the same whether it’s sold as Lipitor or as a generic. Generics must demonstrate bioequivalence to the brand, meaning they deliver the drug to the body in essentially the same way. - Potency and HMG-CoA reductase inhibition per mg are considered the same for brand-name and generic atorvastatin. - Regulatory standards require that the pharmacokinetics (AUC and Cmax) of the generic be within about 80–125% of the brand for the same labeled dose. - Differences, if any, are usually due to inactive ingredients (excipients) or manufacturing nuances and are not clinically meaningful for efficacy or safety. If you notice a different effect after switching, talk with your clinician; sometimes perceptions or minor differences in fillers can influence tolerability, but the actual drug activity should be the same.
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