Pill Identification by Imprints: DX 31 Home Pill Identification by Imprints: DX 31 2 results ISOSORBIDE MONONIT ER 60 MG TB Side 1: DX 31 Color: Light Yellow Side 2: Shape: Oval ISOSORBIDE MONONIT ER 60 MG TB Side 1: DX 31 Color: Light Yellow Side 2: Shape: Oval Other Popular Drug Imprint D C K 400 U42 PZ 180 EV 0207 RG L U ESL800 NxFE ZANTAC 300 M T11 OMEGA-RX L113 TL 217 AZ E 799 MYLAN A4 A P 54 108 NL 770 LANOXIN Y3B AA 12 M A15 ML 70 226 or 291 A21 749 G 45 Z12 105 WPI 2245 MP 116 877 I 50 ZOVIRAX GAVISCON 1175 7.5 mg Sandoz 663 568 93 089