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 p 2.5/325 G G A10 MYLAN 8015 Z 4237 AN35 ZD 15 M161 293 F 25 7 99 U-S 42 7.5/500 AN 777 188 671 G 24 7 11 ML 013 logo and 80 P-114 93 5269 DEPAKENE 93 41 WATSON 783 FLZ 150 80 ML-P16 HYD 80 RD 12 AZ 011 KU 181 Tofranil-PM 125 mg GG 44 RPR 202 ZC 64 GX CG7 MUTUAL 901