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 954 PH 020 ML54 AS MP 81 G 2001 44-329 G 3741 803 M 755 I 49 G 325 E 84 M B9 EXELON 1.5 mg P121 DDS 080 L 5 G 2 M L19 LOTREL 2255 LMT H151 L829 STO 50 West-ward 477 242 2 L-FLAV A-007 5 SHIRE 381 L17 Ziks631 FENTANYL 200 P212 M 147 Nitroglycerin 0.6mg/hr 742 F 8 Vivotif