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 335 243 PGZ IP 109 G 0522 S 434 ZD18 NP 1 MUTUAL 105 54 013 E 4 logo and 3117 EP 320 I85 FLI 14 mg S191 SA 100 ML 23 M B1 RP103 IDT M60 TA1M APTALIS 15 Phillips' GG 26 TCL 080 BL 05 VM DMQ 20-10 TL 115 logo and 658 L344 CK L147 AA 71 54 447 V400 MYLAN 5410 S 370 R332