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 RIL AN 2 45 b 974 K105 A 10 logo and 120 I20 HP 46 V 1 L409 M 437 n 356 68 85 logo and 52 66 G 172 2776 ZONEGRAN 100 SJ B384 20LA L324 GG 21 L194 981 7.5 300 REL900 L 3 CPL 3032 GG 505 WATSON 790 L122 E 38 E 82 POLY 730 TL515 SZ 202 KU 486 R 5