The present invention provides methods of reducing the cytotoxic effects of nitric oxide and sulfides comprising coadministering nitric oxide with sulfide. In addition, the present invention provides novel pharmaceutical compositions comprising both nitric oxide and sulfide. The methods and compositions of the present invention may be used in the treatment or prevention of a variety of diseases and disorders, and also in the prevention of cell or tissue damage, including that resulting from ischemia or hypoxia.
