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 T536 M 424 M PD6 PLIVA 471 T500 568 LK 50 851 L881 AS+ D P02 N 4 NC 300 XANAX 0.5 logo and 5307 IP 8 93 7198 TEVA 01A M 2540 49 A 13 G 0029 H 102 ZA-46 123 808 979 logo and 96 U-S 250 A33 C C ZONEGRAN 25 U-S 42 L217 logo and 49 BL 302 J2 PAXIL logo and 21 WPI