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 MYLAN 199 Benadryl C P RDY 343 54 299 HPC 200 FIORINAL 955 ASPIRIN L G 3511 TCL 086 P 75 HYCAMTIN 316 PD 156 MYLAN DA 10 10 00 TEVA 7590 IP188 T 50 IP 305 NPS 275 MYLAN 7010 XR 200 MP 118 54 142 81 A 215 PY 1 W 781 NP 1 WATSON 463 STO 100 ZESTRIL 20 U26 GG 21 L282 718 SLOW- MAG MM WW 64