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 O20 E4 MYLAN 347 C020 WRF 1 RE 24 M D10 54 706 MYLAN 4250 G38 M B8 485 923 R 200 P 200 logo SANDOZ 666 605 EM1 F11 54 751 P50 4993 P 25 logo and 067 S405 1000 ALTO 902 GG 336 A CS GG 438 MLX 152 Sandoz C 54 ML 040 CREON 1236 THIS END UP LASER 360 RCC GPE PA1 EP 127