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 AS A22 M 445 C8 Lopid 91 MP 442 G 037 West-ward 475 F 2 logo and 2779 IP 101 FS3 C56 M208 b 96 F 73 DAN 5782 RIC or FV M605 0384 40 mg 36 01 N L 702 E3 GG 739 APO 200 NT 400 54 733 54 521 GC5 850 ALLFEN 1079 MYLAN 2268 RD 12 GP 151 Phillips' D I I MYLAN 3125