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 608 ZVR 100 54 583 logo and 0.5 MP 271 M C28 NORCO 729 5971 V U-S 250 Pfizer BMS 200mg logo and 14 MSD 117 VALPROIC 250 FX100 SYPRINE 81/40 TARO PHN 100 SP 22 C 17 ZE 43 R 2.5 93 832 B134 G 223 CTI 224 K 46 S G 013 U 169 RENAGEL 400 M 45 54 533 A 45 OMP 20 b 96 TCL340 AN248 logo and 1112 GG 505