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 KLX S 10 I 11 MYLAN 5100 045 CALAN 120 54 411 M 1860 L490 MP 66 R428 7156 54 795 WW M 221 WC 800 b 95 266 ALTACE logo and 9 100mg logo and 4443 WATSON 384 or WATSON RD 54 E 63 STO 100 376 MYLAN 183 5 6 AZ 011 54 710 C369 APP 332 DO or DP 874 4 1313 2632 AA 05 93 3127 NPS 550