Pill Identification by Imprints: ATN 50 Home Pill Identification by Imprints: ATN 50 2 results ATENOLOL 50 MG TABLET Side 1: ATN 50 Color: White Side 2: Shape: Round ATENOLOL 50 MG TABLET Side 1: ATN 50 Color: White Side 2: Shape: Round Other Popular Drug Imprint 0891 SLX 102 54 511 51 38 557 Compoz 832 100 M164 E300 349 AN 641 1120 ZC 77 EM 10 54 760 West-ward 3141 4186 E 1157 VP 120 54 150 ASC 116 ML 36 NT 26 CP 50 L 66 54 349 K 26 US 13 NxFE Macrobid AMOXIL 250 M P9 CL 024 K 28 321 ALKA SELTZER PLUS AC 132 ACCOLATE 10 MCR 314