Pill Identification by Imprints: M 13 Home Pill Identification by Imprints: M 13 2 results TOLBUTAMIDE 500 MG TABLET Side 1: M 13 Color: White Side 2: Shape: Round TOLBUTAMIDE 500 MG TABLET Side 1: M 13 Color: White Side 2: Shape: Round Other Popular Drug Imprint ZC 67 ACTICAL DONNATAL 1010 CYP 161 L463 M F1 logo and 50 mg RX 505 JMI D16 T010 SL 125 GS JT C 115 PLIVA 471 ZONEGRAN 25 TV 6 EP 135 L 51 244 PX 3 ER 1 54 688 Centrix 133 ER 2 L 3 V ER L133 CM3 NORCO 539 Librax I112 U L M 407 logo and H8 E 149 B 304 logo and 5711 MYLAN 1650