Pill Identification by Imprints: 31 90 Home Pill Identification by Imprints: 31 90 2 results METAXALONE 800 MG TABLET Side 1: 31 90 Color: White Side 2: WPI Shape: Oblong METAXALONE 800 MG TABLET Side 1: 31 90 Color: White Side 2: WPI Shape: Oblong Other Popular Drug Imprint 54 533 211 851 250 MG 13 32 I 53 MP 160 U22 0.45/20 93 833 V355 TL049 logo BI-33 S253 4H2 C 92 G 55 NT 300 M E15 10 or 20 E 139 logo and 4806 GG 331 54 731 MYLAN 4010 PZ 180 SYMAX E 5000 AC M2A4 57344 ORAP 1 CP109 PA20 200 or 400 I 23 logo and 038 EP 118 WFHC 1161 HH210