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 WW1 NCH 0830 ORN 57 2369 FI 37 97 G 32 54 349 M B1 logo 133 TV U4 ZA47 G 0533 MYLAN 2250 M 544 Syntho GG cor 150 379 EXELON 3 mg U46 2105 V ADIPEX-P HP 26 L16 S593 C133 EV 0079 812 ZANTAC 150 M A5 M 132 HBP FLU 93 670 logo and 806 54 357 XELODA W 112 C 283 C182