Pill Identification by Imprints: M 63 Home Pill Identification by Imprints: M 63 1 result ATENOLOL-CHLORTHALIDONE 50-25 Side 1: M 63 Color: White Side 2: Shape: Round Other Popular Drug Imprint E72 US 5 L430 SANDOZ 573 ap and logo 550 N 204 M AC R 15 FEL 600 EV0077 M 543 K 100 Y 45 J65 177 1250 04 93 3107 IP 10 4896 E 42 GS TF7 ZA 66 Poly 216 E1 or E2 or E3 or C2 12 21 54 751 360 ACA 100mg P40 Respa E 749 377 L5 2175 717 logo and 8 C47 RD 72 ATN 100