Pill Identification by Imprints: R31 Home Pill Identification by Imprints: R31 1 result MEFENAMIC ACID 250 MG CAPSULE Side 1: LU Color: Ivory Side 2: R31 Shape: Oblong Other Popular Drug Imprint EXELON 1.5 mg GG 506 B168 HYD 30 NEORAL 25mg STO 200 FENTANYL 50mcg/hr DX 31 BL 2172 REV FELBATOL 400 NT or EP or E HP 3 54 760 E 648 B AYE R P12 R6 M A11 I 136 S 20 KPI 117 232 EP 904 Z 13 Y 044 928 logo and 115 COUMADIN 7 1/2 M 51 N 2 U15 LOTREL 0384 Q50 M159 V258 Estradiol 0.1 mg/day 33