Pill Identification by Imprints: P F Home Pill Identification by Imprints: P F 2 results THEOPHYLLINE ER 400 MG TABLET Side 1: U 400 Color: White Side 2: P F Shape: Round THEOPHYLLINE ER 600 MG TABLET Side 1: P F Color: White Side 2: U 600 Shape: Rectangular Other Popular Drug Imprint LES200 ALO300 logo and A2 RD27 WRF 6 P 400 G 0533 C 745 499 I 22 316 or 317 572 Tri ELP 2 1/2 CL 56 GSI1000 W 718 54 251 AUGMENTIN 875 400 750 MG MIA 110 G 51 E 123 M250 L 5 E1 4 9 D2/500 E 404 Tiazac 300 EK 25 C81 T 277 4008 MLX 152 E503 TV U7 3431 FENTANYL 400 MCG SZ 210 fentanyl 800 mcg