Disulfiram has been used for decades to treat alcoholism. Its therapeutic effect is thought to be mediated by the irreversible inhibition of aldehyde dehydrogenase. Recent reports have indicated new therapeutic uses of disulfiram, in particular in human cancers. Although the biochemical mech-anisms that underlie these effects remain largely unknown, certain enzymes involved in cancer processes have been reported to be targeted by disulfi-ram.