Pill Identification by Imprints: N T4 Home Pill Identification by Imprints: N T4 1 result THEOPHYLLINE ER 400 MG TABLET Side 1: N T4 Color: White Side 2: Shape: Round Other Popular Drug Imprint AK 80 M D5 Lilly 3229 691 logo 1114 SAL R P PFD 267 mg CL 57 973 A CL E 223 T91 MEPHYTON NORVASC 5 Phillips' P30 521 TN 1 Q22 LILLY 4112 C C+C SG 324 E 7 M 146 PLIVA 328 WAR 2 1/2 G71 A510 EV0077 W 784 PROSCAR R25 A CS PD 532 E 123 C HBP KU 119 E3 209 or 274