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 NP 14 10 31 C26 ED UB logo and 2416 G23 25 102 Z 2089 0027 V L158 AN 572 54 163 U-S 500 GP 118 54 396 299 44 113 MYLAN 6120 ZA-09 ZE 43 44 159 BACTRIM DS 68 85 logo and 123 4839 V 54 323 EP 131 37 98 10 VALIUM 678 MP 81 M Z2 2065 V E 104 SG 321 KU 181 OCUVITE ZA07 ACA 100mg M RE4