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 IDT M15 logo SANDOZ 665 CL 12.5 LDT 54 866 54 331 N 344 ALV 332 LBH 15 mg N 741 5686 IP 219 RX 828 4186 ML 60 TL 708 T/255 721 1 M T1 GG851 W 903 LU LU L015 4007 FR32 6 mg RX 553 GG 822 93 7384 Correctol 104 MYLAN 7165 OS 303 E20 SG 328 ATON 705 41 2230 E 223 logo and A4