The present invention discloses anti-cancer compositions, and associated methods, including an anti-cancer composition comprising: a cellular energy inhibitor having the structure according to formula I wherein X is selected from the group consisting of: a nitro, an imidazole, a halide, sulfonate, a carboxylate, an alkoxide, and amine oxide; and R is selected from the group consisting of: OR′, N(R″)2, C(O)R′″, C1-C6 alkyl, C6-C12 aryl, C1-C6 heteroalkyl, a C6-C12 heteroaryl, H, and an alkali metal; where R′ represents H, alkali metal, C1-C6 alkyl, C6-C12 aryl or C(O)R′″, R″ represents H, C1-C6 alkyl, or C6-C12 aryl, and R′″ represents H, C1-C20 alkyl or C6-C12 aryl. The anti-cancer composition can additionally comprise at least one sugar, which stabilizes the cellular energy inhibitor by substantially preventing the inhibitor from hydrolyzing. Also, the anti-cancer composition can comprise a hexokinase inhibitor. Further, the anti-cancer composition can comprise a biological buffer that is present in an amount sufficient to at least partially deacidify the cellular energy inhibitor and neutralize metabolic by-products of the cellular energy inhibitor.