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 RP M121 MP 303 logo and 3093 RN10 XR 150 93 7437 D 92 cor 230 K11 POT 30 SLC 224 MYLAN A3 F1 347 OP100 54 733 SV J3T GG 706 DF L144 1 85 V 6 160 MOD 100 972 NORCO 729 HP 229 L324 5971 V L023 BENTYL 10 MYLAN 345 PGZ VP 011 WATSON 782 583 PH 32 OM N 60