Pill Identification by Imprints: M C4 Home Pill Identification by Imprints: M C4 1 result CAPTOPRIL 100 MG TABLET Side 1: M C4 Color: White Side 2: Shape: Round Other Popular Drug Imprint West-ward 787 W1 WC001 PD 532 logo and 150 54 899 Advil C&S CL55 35 84 GIL 1 798 13800UL M1 DAN 5 MYLAN 1001 par 021 Lilly 3231 logo and 3116 RX632 54 943 P-D 916 73 00 TV 598 2 RP ZC19 201 1 GN MYLAN 6203 PLIVA 647 AN 513 GDC 555 606 CTI 142 ML 22 R3 ER 2 8I GG 623 M X b 971