Pill Identification by Imprints: U 400 Home Pill Identification by Imprints: U 400 1 result THEOPHYLLINE ER 400 MG TABLET Side 1: U 400 Color: White Side 2: P F Shape: Round Other Popular Drug Imprint G&W AA 79 P107 MYLAN 162 EXELON 1.5 mg IP 203 Motrin IB DAN 5554 M 617 137 T 207 LOPRESSOR 35 35 IX FENTANYL 75mcg/hr EP 136 b 775 DCI C 13 ENA M B8 TL015 BRISDELLE GX CE2 CPC 997 EC-NAPROSYN W 903 SYMAX A50 SOMA MYLAN TM 100 EP 321 IMA 100 CPL 3031 X10 TCL 016 894 69 XR 50 or XR 200 or XR 300 715