Pill Identification by Imprints: Q21 Home Pill Identification by Imprints: Q21 3 results METFORMIN HCL ER 500 MG OSM-TB Side 1: Q21 Color: White Side 2: LU Shape: Oval METFORMIN HCL ER 500 MG OSM-TB Side 1: Q21 Color: White Side 2: LU Shape: Oval METFORMIN HCL ER 500 MG OSM-TB Side 1: Q21 Color: White Side 2: LU Shape: Oval Other Popular Drug Imprint D 32 CAPACET M C28 logo and 242 M 434 WW 41 MYLAN 2268 CYP 196 H569 8.6 Pepto Bismol 93 753 L257 Lilly 2 ZC17 Renvela 800 M 13 91 0425 GG 737 cor 230 M 0 15 G456 GG 53 M 38 54 857 1335 GLYNASE 6 L MX 24 GG 739 N 940 93 657 E 707 54 373 logo and 2849 A1 CL 42 ucb 500 674