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 A 171 54 306 GG 489 logo and EK 4895 GILEAD 10 L 125 Lilly ZF 26 A05 AN 54 DROXIA 6336 A 31 U3 G 3719 L469 L150 D I I MP 20 MYLAN 731 W1 TL508 TARO 56 U30 MYLAN DE 15 PhosLo 2172 270 A332 572 Tri C7 logo and 3061 MYLAN 8200 37 46 435 APTALIS 40 logo and 752 4891 52H 52H CMZ 200