In one aspect, the present invention provides chemoprotectant compositions that each comprise at least two of the chemoprotectants disclosed herein. The chemoprotectant compositions of the invention are useful, for example, for ameliorating at least one adverse effect of chemotherapy. In another aspect, the present invention provides methods of ameliorating at least one adverse effect of chemotherapy, the methods each comprising the step of administering to a subject undergoing chemotherapy an amount of a chemoprotectant composition that is effective to ameliorate at least one adverse effect of the chemotherapy.