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 OXC 150 AZ 013 cor K 100 573 G221 RI 61 44 334 I 64 SB 4140 K 46 791 logo and A2 RX905 139 K2 E 7 BPI 152 IT 68 L015 RIC alza 54 RIFATER WELLBUTRIN XL 300 GG 439 POTABA 51 M PD1 60mg NTBC 2 mg B 543 5411 F 76 Buprenorphine Transdermal System Watson 369 ZC 80 Lilly 3229 T 175 782 RE G 322