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 1 83 333 7153 REGLAN G 10 GM 2 H145 NC 300 OME 20 H E 63 EP 54 242 AMBI 445 PHARMACIA & UPJOHN IB 200 A 44 C 25 EN1 T21 VASERETIC 553 VP038 XANAX 1.0 FENTANYL 800 GG 225 14 MP 8 1049 CL91 BP 722 137 1345 VP and logo U22 logo and 97 44-502 GG N7 MYLAN 3402