Pill Identification by Imprints: M451 Home Pill Identification by Imprints: M451 1 result PHENAZOPYRIDINE 200 MG TAB Side 1: M451 Color: Reddish-Brown Side 2: Shape: Round Other Popular Drug Imprint G-X-U 44 291 .7 NOVO 288 93 308 NP 10 FPI IP 253 PZ 250 109 10 31 PE 723 D U 785 PKC NVR 836 N192 M N4 382 RX904 STI 022 logo and LD PREMPRO 0.45/1.5 G 372 2 A 153 U86 160 mg H 106 M 10 R12 C133 MAXIPHEN DM 1205 A A A M 60 AA 820 2410 V E 5000 L124 P61