Pill Identification by Imprints: ATN Home Pill Identification by Imprints: ATN 2 results ATENOLOL 25 MG TABLET Side 1: ATN Color: White Side 2: 25 Shape: Round ATENOLOL 25 MG TABLET Side 1: ATN Color: White Side 2: 25 Shape: Round Other Popular Drug Imprint 54 571 93 711 US ProV U-S 40 401 C 474 MP 513 EX0096 or 50 VASO 20 F1 CTI 112 Z47 894 WW65 ZD 19 54 396 396 2 mg M 171 M RN3 707 D10 Andrx 699 A116 P 61265 us NL4S C77 M A15 208 1 84 ECR FIORICET FIORICET L486 Pepto Bismol logo and 28 CL8 292 or 293 S593 M RN