The present invention provides a novel class of dithiocarbamate-metal complexes and their uses in medicine. Also provided by the invention are combinations and pharmaceutical compositions, comprising a dithiocarbamate (or thiuram disulphide) such as disulfiram and cyclodextrin, with a source of a heavy metal. Surprisingly, the inventors found a synergistic potentiation of the anti-tumor effect, when a dithiocarbamate/heavy metal mixture was combined with a cyclodextrin. The compounds and combination of the invention are particularly useful in the treatment of tumor diseases, and other disorders. Provided are the compounds, combination, pharmaceutical compositions and kits, as well as methods for the preparation of the combinations of the invention.
