Pill Identification by Imprints: R189 Home Pill Identification by Imprints: R189 1 result MINOCYCLINE HCL 50 MG TABLET Side 1: R189 Color: Yellow Side 2: Shape: Oval Other Popular Drug Imprint 521 Estroven KEFLEX 500 mg Correctol 54 857 G 253 TCL 131 673 E 50 PT ZC 65 0.2 GDC 122 E 54 35 86 RI19 N 83 550 par 009 CP 404 Cdx 50 NEURONTIN 600 KPI 232 WW969 Tofranil-PM 125 mg VP038 N 20 PROTONIX 117 3205 CP 332 T600 C533 D 84 C 745 93 292 FS U16 CLOM 50 W 921