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 404 F 75 RI20 BP50 or plain 002 L437 300 ER CL34 PLETAL 50 4829 T 5 M T11 SZ Z4 T 10 cor 160 TIGAN 180mg G 252 1222 M 51 M112 GG 336 MVC 150 30/2 463 E 410 D 87 125 1327 MB-111 OR Tiazac 420 logo and Zenith 100 mg GG 134 J78 54 717 Dia B O20 Butrans 7.5 mcg/hour KPI 284