Methods of reducing cellular damage are described that include (a) administering to the mammal an oral dosage form comprising a therapeutically effective amount of a first antioxidant, and (b) administering to the mammal a topical dosage form comprising a therapeutically effective amount of a second antioxidant, wherein at least one of the first antioxidant and the second antioxidant comprises acerola concentrate. Methods of inhibiting free radical production, methods of scavenging free radicals, and kits for reducing cellular damage are also described.