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 ibr 70 mg 93 3129 C HBP 93 3107 PFIZER 399 T546 logo 113 V 5 MX2 ANI 231 44 546 93 657 UPSHER-SMITH 0085 logo 753 Flomax 0.4 mg 34 SV MYLAN 5211 11.4 367 R 10 E224 B135 54 758 L212 C 13 #L 001 268 RESPA 177 F 84 WPI 3332 RH 4833M L78 G442 U25 L 128 173 G 51 H 2