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Generic medications, such as generic Xanax, are designed to have the same active ingredients, effects, side effects, route of administration, and quality as their brand-name counterparts. The U.S. Food and Drug Administration (FDA) requires that generic drugs be bioequivalent to the brand-name drug, meaning they must deliver the same amount of active ingredient into a patient's bloodstream within a similar timeframe [1].

In the case of Xanax, the active ingredient is alprazolam, a benzodiazepine used to treat anxiety disorders, panic disorders, and anxiety associated with depression [2]. Generic Xanax, which contains alprazolam, should have the same therapeutic effect as brand-name Xanax [1].

However, there can be differences in the inactive ingredients, such as binders, fillers, dyes, or coatings, between generic and brand-name drugs [1]. These differences may cause variations in the size, shape, or color of the generic drug compared to the brand-name drug [1]. In some cases, these differences can lead to variations in how a patient reacts to the drug, but these instances are rare [1].

It is important to note that while generic drugs must have the same active ingredients and therapeutic effects as their brand-name counterparts, they are typically less expensive [1]. This is because generic drug manufacturers do not have to repeat the costly clinical trials of new drugs, allowing them to set a lower price [1].

In summary, generic Xanax, which contains the same active ingredient (alprazolam) as brand-name Xanax, should have the same therapeutic effect [1][2]. However, there can be differences in inactive ingredients, which may cause variations in how a patient reacts to the drug [1]. Always consult with a healthcare provider or pharmacist for personalized medical advice.

Sources:
[1] U.S. Food and Drug Administration. (2013). Generic Drugs: Questions and Answers. Retrieved from <https://www.fda.gov/drugs/understanding-generic-drugs/generic-drugs-questions-and-answers>
[2] U.S. National Library of Medicine. (2021). Alprazolam. Retrieved from <https://medlineplus.gov/druginfo/meds/a682132.html>