Pill Identification by Imprints: E 221 Home Pill Identification by Imprints: E 221 1 result METFORMIN HCL 1,000 MG TABLET Side 1: E 221 Color: White Side 2: Shape: Oval Other Popular Drug Imprint logo and 11 M 2 BL 06 I 10 M R7 1453 201 TEVA 2049 TARO 16 C 11 CT 1 CIT ZC 25 CL9 ME RE12 FAM500 APO T300 54 881 652 L010 a bone outline 261 logo and 048 GG 705 P75 E9 PKC NVR B or 0832 logo and 3093 MX32 I31 MD 54 193 Lilly 3239 V2 CL14 M4 EXELON 1.5 mg WRF 2 NPR EC 500