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 logo and 2666 RX616 PZ 250 672 PAD 0118 E 149 93 208 CIS 28 MP 178 E 704 I33 C 286 7155 logo 9 RI52 LL 721 logo and 4806 TUSSIGON GG 331 EXELON 3 mg BRX 2 Z 3926 CRESTOR 5 A175 R332 E 410 WW 4467 1313 A68 TARO 11 472 GG 507 logo 1000 E 39 HP 362 A A A L544 HP 63 MYLAN 2250