Etodolac ER Imprint: T500 NDC code: 516724052 Etodolac ER Imprint: T600 NDC code: 516724053 Etodolac Extended-Release Imprint: 271 NDC code: 683820271 Etodolac Extended-Release Imprint: 272 NDC code: 683820272 Etodolac Extended-Release Imprint: 273 NDC code: 683820273 1 2 3