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"Kryptonite" is a song by the American rock band 3 Doors Down. It was originally released as a demo for local play by 97.9 WCPR-FM in Biloxi, Mississippi. Later, it was recorded for their first major label album The Better Life. It was successful on the Billboard Alternative Songs chart, staying at number one for eleven consecutive weeks, becoming their first song to do so. It reached number 3 on the Billboard Hot 100 for the week ending November 11, 2000