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 L 80 SB 4141 VP 011 100 mg OT AK 253 93 215 335 E8 ER 2 TCL 355 93 5527 I 51 CL9 TL 002 600 54 771 MP 30 E 210 023 WW 268 A 42 barr 15 mg DAN 5556 MP 178 GG 85 W 516 C1 PA1000 34 UCB 500XR S 90 3 DX logo and 805 cor 134 KU 119 ZZ M31 1052 M 228