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 ZC 07 M 575 ENTOCORT EC 3 mg OS 211 L 299 E700 logo and 25 mg MLX 123 logo and 0303 IP 103 E1 49 V2 LUPIN AN 543 TL 125 C020 WW 33 F TI 100 AZ D 88 S 900 E58 396 MYLAN DE 30 3137 C4 or C2 759 973 RE 79 AE OS 301 logo and 1000-40 610 54 150 Buprenorphine Transdermal System WATSON 348 HP 229 CC