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 cor 256 5382 4994 RC17 953 61265 us RP120 G 45 2232 T33 O10 PH033 R 5 Climara (estradiol) 0.075mg/day PHARMACIA & UPJOHN CL14 logo and S5 1000 M MRK V20 A CJ E 18 LL 253 54 215 M P8 W 902 C 35 S 902 LH1 229 THIS END UP 539 A538 AC 41 G232 ASK002 PV40 C162 E 511 CALAN I 11