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 213 WC 404 L068 N 175 P L M 2540 LH2 PD 270 4740 N P AN898 10 54 455 M605 A117 MYLAN 5050 logo and S25 1000 M WPI 3635 M U12 SR 375 E 4 54 194 logo 20 Celgene/ 150mg RDY 664 V CORGARD 40 K 18 Advil A&CR L187 TEVA 7589 116 T2 N004 logo and 2416 FLUOXETINE 10 mg BMS 150mg GG N6 BL Mucinex WRF 21/2