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 F51 MYLAN 2260 93 7385 MVC 75 MLX 152 NTBC 20 mg Phillips G 3740 LILLY 4165 033 2 53 N029 C 269 logo and 2778 142 MP 272 E 647 STI 021 L957 M GP10 GG 531 H 502 P 25 I 21 AA 70 GM 2 K 13 403 MVC-008 or MVC-007 logo PAMELOR 75 mg B 294 G 241 U7 or U13 G 0 E 704 8 mg L612 XANAX 1.0 APTALIS 20 PC20