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 HE MAX PY 1 GS FC2 Dulcolax PH 063 5011 V TV U2 NT 151 SP2 A/P 12.5 / 45 OME 20 B 1 MP 30 logo 133 Neurontin 400 mg MYLAN 257 CP108 S2 2775 K75 S8 N 25 TEVA 7592 FL 145 M F1 ZC18 MYLAN 2260 logo and 620 BRX 0.25 C7 L 348 PC18 US 10 SZ 787 TARO P P 240 M 59 SAT W 1033