Is there a generic version of spironolactone?

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Spironolactone is the generic version of the brand name drug Aldactone. Produced by Pfizer, the patents for Aldactone expired in 1982 and 1983. Generic versions are sold under the name of spironolactone tablets. Spironolactone tablets come in three strengths: 25 mg., 50 mg. and 100 mg.